After one island has experienced mass extinction of its mainland species, the chances are that the closer and more distant islands will have no consequences when it comes to their equilibrium.
Explanation:
If an island experiences devastating volcanic eruption, and the majority of its mainland species are destroyed, the island will have huge consequences when it comes to its equilibrium number of species. The reason for this is that the equilibrium number of species represents the optimal number of species, or rather the number of species that is capable on surviving on the available resources, not more, not less. With the majority of the mainland species gone, the island will have significantly less species than the equilibrium number of species, so it will take some time in order that number to be achieved.
Because it is an island we are talking about, and mainland species in question, the nearby and more distant islands will not have any consequences on their equilibrium number of species. This is because the species on those islands will not be affected, as they don't have any direct connection with the mainland species of the island in question. Also, the mainland species from the other islands will not be able to migrate in mass numbers toward the island that experienced disaster, but only accidentally and under particular conditions, but still in very small numbers, thus maintain the balance.
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Which of the following lists the rocks in the order of increasing grain size and increasing grade of metamorphism? schist, slate, phyllite phyllite, slate, schist slate, schist, phyllite slate, phyllite, schist
Answer:
From lowest to highest grade,
Slate > Phyllite >Schist
Explanation:
The grade of metamorphism is usually studied in the metamorphic type of rocks where the rocks are formed due to the high pressure and temperature condition. These rocks are formed in a sequence from a lower grade to a higher grade. Here the low-grade rocks gradually change to more hard and resistant rock when subjected to extreme pressure-temperature conditions.
In the above, there are 3 metamorphic rock names gives, which can be arranged from a lower grade to higher grade. Slate is a low-grade metamorphic rock that changes into Phyllite, another medium-grained metamorphic rock. This Phyllite again alters to Schist under extreme pressure-temperature conditions.
The rocks slate, phyllite, and schist are listed in increasing order of grain size and metamorphic grade. Slate has the smallest grain size, followed by phyllite and then schist, which has the largest grain size. The grade of metamorphism also increases in the same order.
Explanation:The correct order of rocks in terms of increasing grain size and increasing grade of metamorphism is slate, phyllite, and schist.
Metamorphic rocks are formed when pre-existing rocks (also known as parent rocks) undergo changes due to physical or chemical conditions, such as heat, pressure, and chemical solutions. This process is known as metamorphism.
Slate is a fine-grained metamorphic rock that can be split into thin pieces along parallel layers. Due to its lower grade of metamorphism, it has the smallest grain size among the three.
Next, phyllite has undergone slight more metamorphism compared to slate, hence slightly larger grain size. Phyllite is a type of foliated metamorphic rock created from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation.
Lastly, schist has the largest grain size and the highest grade of metamorphism among the three. Schist is a medium-grade metamorphic rock with medium to large, flat, sheet-like grains in a preferred orientation.
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You have a beach house on the east coast of Florida. The main wave source is to the northeast. Your neighbor to the north of you is having problems with beach erosion and storm waves often come under his house. So he decides to build a groin and he tells you it is for the benefit of the neighborhood. What should you respond to his comment?
You respond by saying "A groin can be successful in stabilizing a beach on the updrift side, but erosion tends to be aggravated on the downdrift side, which is deprived by the groin structure of replenishment by drifting sand." Then suggest to your neighbor that to counteract this tendency, multiple groins should be built in so-called groin fields, to stabilize a larger beach area.
The major biological source of dissolved oxygen in the ocean comes from
Answer:
There are two sources of dissolve oxygen into water: the atmosphere as well as from the water plants.
Explanation:
There are two sources of dissolve oxygen into water: the atmosphere as well as from the water plants. Phytoplankton or any submerged plants are the main source of oxygen in a pond. These phytoplankton produce oxygen by process called as photosynthesis in the presence of solar energy and emit this oxygen into the pond
This dissolved oxygen originates from various places. a biological source containing organisms capable of photosynthesis, which produces oxygen as a byproduct.
Phytoplankton and photosynthetic bacteria like cyanobacteria make up a large majority of these creatures. The atmosphere and water plants are the two places where oxygen may dissolve into water. The primary source of oxygen in a pond is phytoplankton or any submerged vegetation.
In the presence of solar light, these phytoplankton make oxygen through a process called photosynthesis, and they release this oxygen into the pond.
Therefore, phytoplanktons are the major source of dissolved oxygen.
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Anthropological research reveals that most ethnic groups and nations are recent historical creations, our connection to people within these groups is relatively new, and our shared traditions are recently invented. In addition, most members will never meet each other. This allows us to observe that most nations today are what?
a. imagined communities
b. genocidal
c. diasporas
d. ancient tribes
Answer:
a
Explanation:
Most nations today have little more in common than a collection of traditions that are often no more than a few thousands years old. Even in the case that they are older, the constant transformation of habits and practices and the great amount of intercultural exchange lends a great deal of superficiality to the idea of a nation.
Therefore, a nation is a relatively new imagined community that depends in large part on being sustained within the consciousness of each individual member.
Put Antarctica next to the explorer associated with it. Put Australia next to the explorer associated with it. Put New Zealand next to the explorer associated with it. Willem Janszoon Abel Tasman Fabian Gottlieb von Bellingshausen James Cook Henryk Bull Roald Amundsen
Answer:
Australia: Willem Janszoon and James Cook were explorers of Australia.
New Zealand: Abel Tasman and James Cook explored New Zealand.
Antarctica: Fabian Gottlieb von Bellingshausen, Roald Amundsen and Henryk Bull explored Antarctica.
Answers:
New Zealand: Abel Tasman
Australia: Willem Janszoon, James Cook,
Antarctica: Fabian Gottlieb von Bellingshausen, Henryk Bull,
Roald Amundsen
*James Cook is also known for making detailed maps of the Hawaiian Islands, Australia, and the first recorded circumnavigation of New Zealand.
However depending on what lesson you have he's usually put under Australia.
Coastal California is famous for fog and smog (fog mixed with smoke). Why is the California coast foggy/smoggy, whereas Houston, Texas, which is at similar latitude, might get occasional smog from too many cars, but fog is relatively rare?
A) Warm air in Texas rises to make clouds and not fog, whereas in California cold water from the ocean mixes with warm water from the land to generate fog.B) The ocean is warm off the Texas coast, but a cold current running offshore California generates fog when the cold, moist air is drawn ashore by a sea breeze.C) Cold currents along the Texas coast inhibit fog, whereas the ocean is warm off California.D) There isn't really any fog; it is all just smog from too many
Because ocean is warm off the “Texas coast”, but a “cold current” running “offshore California” generates “fog” when the “cold”, “moist air” is drawn ashore by a “sea breeze”.
Option: B
Explanation:
Coastal California is famous for fog and smog as the Pacific Ocean participate in the frequency of fog by catering atmospheric moisture and with the help of its temperature. “The prevailing current” flows from the “northwest” along California coast and in the “North Pacific” its origin is cooled. For “condensation” of “moisture” from “vapor” into “cloud droplets”. Pacific Ocean is an important source of nuclei. As Houston and Texas cities lie at similar latitude and might get smog occasionally but fog is rare because “ocean” is “warm” off the “Texas coast”.
Scientists who study rock formations in caves describe some of the formations as "living rock" because, under certain conditions, they increase in size. Which statement would best dispute the claim that these rock formations are living?(1) Rocks are not composed of cells, while living
organisms are.
(2) Rocks perform complex metabolic processes,
but cannot grow.
(3) Rocks cannot reproduce sexually.
(4) Rocks remain stable in a wide range of physical
conditions.
Answer:
1). Rocks are not composed of cells, while living organisms are.
Explanation:
Heating and cooling of the Rock by sun rays (weathering) , Conditions like this makes the rock to have a change in shape.
What process underneath the earth’s crust do scientists think causes the movement of earth’s plates?
Answer:
Convection currents.
Explanation:
This is caused by the huge temperature and density differences between plates. The hotter they get, the lighter they are and they rise. On the opposite, colder material is more dense, and therefore, it sinks.
In the deepest parts of the earth's mantle, heat is intense as its close to the core, there, great rock mass is heated, partially melted, and it starts to slowly rise to the surface, this creates an ascendent current. At the same time, near the litosfere, great amounts of cold rock and mass sink back to the mantle, creating a descendent current. This continuous and never ending process is what causes the plate movement.
Early mapmakers thought continents might have moved based on their observations of
Answer:
Matching Coastal Lines of Continents
Explanation:
The alignment of coastal lines of different continents helped the early map makers to formulate a thought that continents might have moved. For example, observing the coastlines of western Africa and eastern South American continents suggests the likelihood of this thought. Although taking a closer look at these coastlines, one can observe some irregularities in their alignment, but these irregularities can be explained away by the erosion of these coastal lines over the years.
Early mapmakers suspected that continents might have moved based on their similar shapes. This observation led to the theory of continental drift by Alfred Wegener, which suggests that all continents were once part of a supercontinent called Pangaea.
Explanation:Early mapmakers, also known as cartographers, suspected that continents might have moved based on certain observations. The most notable was the similarity in shapes of different continents, particularly the east coast of South America and the west coast of Africa. It appeared as though the continents could fit together like pieces of a puzzle, which suggested they may have once been connected. This observation eventually led to the development of the theory of continental drift by Alfred Wegener in 1912. He proposed that all continents were once part of a supercontinent called Pangaea, which broke apart and the pieces drifted to their current locations over millions of years.
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Read the following scenario and answer the questions below. Early People and Agricultural Beginnings Long ago, two sisters were talking as they returned from their morning trip to collect mushrooms, seeds, berries, and green leaves for the day's meals. The younger woman was watching the progress of a small rabbit as it hopped across the path and toward the clan's trash midden (refuse heap), where broken tools (made of bone, stone, or shell) were tossed, and where discarded food was thrown. She noticed the rabbit stop and begin nibbling at the many new, green shoots sprouting across one side of the midden. She walked over to look, and she saw that some of last year's discarded dried fruits were growing. Surprised and interested, she called her sister over to discuss this find. The next step in this story would likely be that this woman and her sister ________.
a. began to seek out old middens to find and eat the things growing there
b. began to save, sort, and name different types of seeds
c. started a full-scale garden, digging the soil and enriching it with food wastes
d. began to deliberately plant seeds near their village to make food gathering easier in the future
e. began to trade seeds with people from other villages
Final answer:
The next step in this story would likely be that the woman and her sister began to deliberately plant seeds near their village to make food gathering easier in the future, option D is correct.
Explanation:
The next step in this story would likely be that this woman and her sister began to deliberately plant seeds near their village to make food gathering easier in the future. They observed that discarded seeds from their trash midden were growing into new plants, and realized that they could intentionally plant seeds to ensure a more reliable food supply. This practice of deliberate planting is one of the key factors in the development of agriculture.
Which south american countries does the tropic of capricorn pass through
Answer:
They are 4, Argentina, Brazil, Chile and Paraguay.
Explanation:
The tropic of Capricorn is an imaginary line is placed 23.5 degrees south of the Equator.
This is the zone where the sun is highest during the winter solstice, it was named around 2000 years ago by the Greeks. The word "troops", which means turn, because the sun seems to turn around in the opposite direction after every solstice.
Which of the following applies to the basic constituents of halite, gypsum, and sylvite?
A. transported as dissolved ions;
B. deposited as detrital mud transported as detrital mud;
C. deposited by evaporation transported and deposited as mud-sized particles transported as dissolved ions;
D. deposited by evaporation
Answer:
A. transported as dissolved ions
Explanation:
Answer:
A. transported as dissolved ions;
Explanation:
Which five national parks are closest to california border with nevada
Answer:
Explanation:
The closest national parks are the following:
10. Devils Postpile National Monument
5. Sequoia and Kings Canyon National Park
2. Death Valley National Park
1. Yosemite National Park
7. Lassen Volcanic National Park
The five national parks closest to the California-Nevada border are Death Valley National Park, Joshua Tree National Park, Yosemite National Park, Sequoia and Kings Canyon National Parks, and Lassen Volcanic National Park.
The five national parks closest to the California border with Nevada are:
Death Valley National Park (DVNP) - This park straddles the California-Nevada border.
Joshua Tree National Park (JTNP) - Located in southeastern California, it is relatively close to the Nevada border.
Yosemite National Park - In central California, it's further north but still accessible from Nevada.
Sequoia and Kings Canyon National Parks - These adjacent parks in the southern Sierra Nevada are also a drive away from the Nevada border.
Lassen Volcanic National Park - It's in northeastern California, although further from the Nevada border than the others listed.
Note: While this provides a general guide, exact proximity may vary depending on specific border crossing points and road accessibility. The significant areas of wilderness and parklands like Mojave Desert National Preserve and Anza-Borrego Desert State Park are additional large preserved areas, although not all classified as national parks.
PLEASE HEELLPP!!!! Shinumo Quartzite ( a type of sandstone) was deposited over the Hakatar Shale. What happened to the sea level from the time the Shale was deposited to the time the Quartzite was? Hint: Think about the environment and depth that each rock forms at.
sea level dropped
sea level rose
sea level stayed the same
not enough info
Final answer:
The sea level dropped from the time the Hakatar Shale was deposited to the time the Shinumo Quartzite formed. The shale suggests a deeper water environment, and the overlying quartzite, originally sandstone, indicates a shallow water environment, signifying a regression in sea level.
Explanation:
To understand the changes in sea level between the deposition of Hakatar Shale and the overlying Shinumo Quartzite, which is a type of sandstone, we must consider the sedimentary environment in which each type of rock forms. Shale typically forms in deeper water settings where fine particles settle out of calm water, while sandstone forms in areas with more water movement, such as beaches or shallow seas near the shore. Since quartzite is a metamorphic rock that originated as sandstone, we know that the original sandstone must have been buried and subjected to heat and pressure to transform into quartzite.
The presence of quartzite atop shale suggests that there was a change in the environment indicating a regression in sea level. This regression would have allowed sand to deposit on top of the shale and then eventually become metamorphosed to quartzite. This concept is in line with Walther's Law, which states that the vertical sequence of sedimentary rocks reflects the lateral changes in environment. If sea level dropped, or regressed, it would expose the earlier sediments to erosion and allow newer, shallower water deposits, like sandstone that would later become quartzite, to form on top.
Which state refused to send anyone to philadelphia for the convention?
Answer:
Rhode Island
Explanation:
Incidentally, Rhode Island, while now the smallest state geographically in the Nation, was much more important in colonial times. It was coincidentally the last state to ratify the Constitution.
The Constitutional Convention, as it was also known, was held to address the multiple problems that the fledgeling United States government faced under the current Articles of Confederation. Even the delegates who supported the Articles were able to come to a general agreement on the necessity for deeper changes that ultimately led to a new constitution.
Final answer:
Rhode Island was the only state that did not send delegates to the Constitutional Convention in Philadelphia, where the U.S. Constitution was drafted to replace the Articles of Confederation.
Explanation:
In the historical event leading to the formation of the United States Constitution, Rhode Island was the only state that did not send any delegates to the Constitutional Convention held in Philadelphia. The convention, which began on May 25, 1787, was to revise the Articles of Confederation. However, due to various concerns and distrust in a centralized government, Rhode Island abstained from participating in the proceedings that ultimately led to the creation of a new framework of government for the United States.
Despite the absence of some prominent figures such as Thomas Jefferson and John Adams, and the refusal of Rhode Island to send any representatives, the convention continued with delegates from other states. They convened at Independence Hall in Philadelphia, a site of great historical significance as the place where the Declaration of Independence was previously drafted.
The Constitutional Convention in Philadelphia was a pivotal moment in American history. It brought together a collection of influential figures who, after four months of deliberations, emerged with a document that laid out a completely new plan of government, marking the end of the Articles of Confederation and the establishment of the Constitution of the United States.
During which event were thousands of Cherokees, Creeks, Seminoles, and others resisting assimilation were forced to migrate from their ancestral homes westward to a specially designated Indian Territory (now Oklahoma)___________.
Answer:
The event is known as the Trail of Tears
Explanation:
In 1830, congress passed the Indian Removal Act. This law allowed then-president Andrew Jackson to remove the native indian populations of the Southeastern United States, to a new territory in Oklahoma, known as the Indian Territory.
Over 30thousand people belonging to the tribes mentioned in the question were obliged to abandon their homelands, and move westward. During this event, a lot of them died of diseases and starvation. This sad reality is the reason why it has come to be known as the Trail of Tears.
This body of water is named for the subcontinent that lies on the continent to the north.
Answer:
Indian ocean
Explanation:
Indian ocean is the water body which named after the subcontinent lies in north to it. Indian subcontinent includes:- India, Pakistan, Bhutan, Bangladesh, Nepal and Afghanistan, Maldives, Sri Lanka. Once the continent was the piece of Gondwanaland and now termed as Indian subcontinent. The ocean southern to Indian subcontinent is named as Indian ocean because of this subcontinent.
Answer:
Indian ocean
Explanation:
If phosphorus concentrations were to suddenly increase in a marine ecosystem, which of the following would likely occur?
A) no change in the rate of primary productivity
B) increased primary productivity
C) decreased primary productivity
Answer:
C
Explanation:
decreased primary productivity due to dangerous amount of phosphorus
Which of the following statements about turbidity currents is true? Choose one: A. Turbidity currents and river erosion carve deep submarine canyons. B. They are found only on active continental margins. C. They leave deposits of graded beds called guyots. D. They are responsible for creating the continental shelf.
Answer:
Option A is correct.
Explanation:
Turbidity currents are created when sand and mud are loosened from the continental shelf by any geological disturbance such as an earthquake.
The current continues to quickly grow in size, as it picks up dirt, rocks and all sort of dirt and increasing its speed. Over time, these currents can alter the shape of the seafloor, creating large submarine canyons.
Answer: A B C
Explanation:
Along with many other governmental reforms that began in 1994, the electrical plant just outside Soweto was closed in 2000, and other plants were brought into use. Some parts of Soweto were then wired for electricity. It is estimated, however, that only about 30% of the more than 1.2 million black inhabitants have electricity in their homes; the remainder either cannot afford the costs involved or live in areas that have no electrical access. These inhabitants probably use ________ for fuel.
Hi! The correct answer is wood and coal.
Explanation:
The majority of the inhabitants of Soweto live with candles as lighting and kerosene as heating. In homes that do not have electric power, they light bonfires outside their homes with old chairs or wood that look for in landfills. To cook and provide warmth to the whole family.
How would you characterize Japan's openness to other countries today?
A.Japan is more open than in the past and involved in regulated trade.
B.Japan is open to its current trade relationships but avoids new ones.
C.Japan is very open and involved in free trade.
D.Japan is not very open and restricts most trade.
Answer:
A.Japan is more open than in the past and involved in regulated trade.
Explanation:
The japan is a centralized and market-oriented economy and is the second-largest in the world and is highly efficient and competitive in the areas of the international trade and is less towards the result distribution and the services sectors.The highland games celebrates the culture of which country?
Answer:
They celebrate the Scottish and Celtic Culture, they are held in Scotland.
Explanation:
These games consist of several athletic competitions, such as piping, drumming, dancing, caber toss, stone put, among the most popular. Music also plays a big role in the games, even 20 or more bands can get together to play music such as Scotland the Brave, among other national anthems.
Every year they attract over 3.500 competitors and more than 20.000 viewers. They are a vital part of the Scottish culture.
The Highland Games celebrate the culture of Scotland.
These games originated in Scotland and are deeply rooted in Scottish history and tradition.
They feature a variety of athletic competitions, such as caber tossing, hammer throwing, and tug-of-war, as well as music, dancing, and other cultural events.
The Highland Games provide a platform for Scots and people around the world to come together and celebrate Scottish heritage, showcasing aspects of traditional Scottish culture, sports, and music.
Therefore, the Highland Games primarily celebrate the culture of Scotland.
The Pacific Ocean has _______ water than the Atlantic Ocean. _______ circulation moves water between warmer and cooler, and saltier and less salty, areas of the ocean. If the thermohaline circulation stops due to global warming, Europe will likely become _______.
Answer:
more water
Explanation:
because of the climatic conditions
The correct answers are the following.
First blank: warmer. Second blank: thermohaline. Third blank: colder.
The Pacific Ocean has warmer water than the Atlantic Ocean. Thermohaline circulation moves water between warmer and cooler, and saltier and less salty, areas of the ocean. If the thermohaline circulation stops due to global warming, Europe will likely become colder.
Thermohaline circulation is the current is deep ocean waters, where the density and the temperature of the water are different. The deep-ocean waters start in the polar regions of the earth where the water is extremely cold. Here, the water gets saltier due to the formation of sea ice.
Lava is
a. always produced during any volcanic activity.
b. molten rock that cools and hardens on Earth's surface.
c. the most life-threatening volcanic product of any eruption.
d. all the same chemical composition, whether it is rhyolite or basalt
Answer: molten rock that cools and hardens on Earth's surface.
Explanation: Lava is liquid rock that are thrown to the Earth's surface by the action of a volcanic eruption. On cooling a Lava form an igneous rock. The Lava are found in the Earth's crust naturally but are thrown to the surface during a volcanic eruption. Lava has the ability to travel long distances during an Eruption.
Which stadium features a number of parking garages that are usually less than half full on game day and may need to be torn down so that the land can be reused for hotels or other purposes?
Yankee stadium have features of a number of parking garages that are usually less than half full on game day and may need to be torn down so that the land can be reused for hotels or other purposes.
Explanation:
Normally on the day of the game, the parking lots of the stadium are full but the stadiums whose parking lots are not even half full even on the day of the game are known as the yanked stadiums.
Some stadiums even have the prospects of changing the use of land of the parking lot. The other prospects of using the lands of the parking lot are like making a hotel on that land or for any other purpose.
The collision-coalescence process generates big raindrops that sweep up smaller cloud droplets, thus growing bigger. Potentially, they grow so large that frictional drag from the surrounding air causes the raindrop to break apart into a larger number of smaller dropletsa. True.b. False.
Answer:
True
Explanation:
The collision coalescence theory states that the individual droplets end to sweep into the big droplets and these droplets are suspended in the air and will interact in the air by the colliding and bouncing off to form a larger water droplet. This term is used on the metrology and they occur when the air is too warm for the formation of the ice crystals. This a dominating process for the precipitation of the warmer regions and the temperature is about 15 °C as some cloud droplets become big enough they tend to fall down also since the bogger falls down more easily than the smaller ones. Factors that promote the collision and coalescence to take place is the thicker clouds, strong updrafts and the differences in the drop size.The thickness of ocean sediments that are close to a mid-ocean ridge is __________ the thickness of ocean sediments that are far from mid-ocean ridges.
A. more than,
B. less than
C.same as
Answer:
The answer is letter B, less than.
Explanation:
The thickness of ocean sediments that are close to a mid-ocean ridge is _less than_________ the thickness of ocean sediments that are far from mid-ocean ridges
Identify the true statement.
a. A. The Antarctic ice sheet has been calving off huge icebergs over the last few decades.
b. Regions covered by glacial ice are termed periglacial environments. c. The expansion of ice sheets at the end of the Pleistocene caused a glacial rebound in northern Canada.
d. Glaciers move by basal sliding as friction between the ice and its substrate increases.
Answer:
Option (A)
Explanation:
Antarctica is a southern continent mainly covered with ice. A large amount of ice has been accumulated in this region in the geological past, but over the last few decades, the icebergs of this region are continuously affected due to the rapid increase in global industrialization. These increasing industries are responsible for the emission of a large amount of toxic gases such as carbon dioxide, methane, hydrogen sulfate. Due to this rapid increase in the amount of carbon in the atmosphere, the global temperature of the earth simultaneously increased, resulting in the melting of the ice-bergs at Antarctica.
Thus, the correct statement is option (A).
PLZ HURRY IT'S URGENT!!
What has been the impact of declining harvests and years of drought on African subsistence farmers?
A. Subsistence farmers refuse to change their traditional ways and do anything different from their forefathers.
B. Subsistence farmers continued to plant crops such as maize to make sure they can feed their family.
C. Subsistence farmers have begun to plant some drought resistant crops and break away from their traditional crops.
D. Subsistence farmers have turned to nomadic pastoralism in search of profits.
Answer:
c
Explanation:
Answer:
C. Subsistence farmers have begun to plant some drought resistant crops and break away from their traditional crops.
The igneous rock gabbro most likely formed from molten material that cooled. True or false
Answer:
True
Explanation:
Gabbro is an igneous rock which is formed by the gradual cooling of molten magma below the surface of the earth. It is an intrusive rock which means that its cooling and solidification was done below the surface of the earth. Gabbro should not be confused for basalt which has similar chemical compositions as gabbro. The only difference being that basalt has a smaller grain size which is as a result of its quick cooling and solidification process above the earth's surface (extrusive rock).