The absence of dinosaur fossils in Paleocene bedrock suggests the mass extinction at the Cretaceous Period's end. Geological layers indicate an asteroid impact, supported by iridium concentration and the discovery of a related impact crater.
Explanation:The evidence that suggests a mass extinction of the dinosaurs occurred at the end of the Cretaceous Period is A) an absence of dinosaur fossils in Paleocene bedrock.
The end-Cretaceous extinction event, which occurred about 65 million years ago, is one of the best-understood mass extinctions. This catastrophic event led to the disappearance of dinosaurs, except for a theropod clade that evolved into birds. The defining marker of this event is a high concentration of iridium in the geological layer separating the Cretaceous and Paleogene periods, consistent with the theorized impact of a large asteroid near the Yucatán Peninsula. This impact hypothesis is supported by the discovery of an appropriately aged impact crater and additional geological evidence. The boundary layer with increased iridium also coincides with the abrupt disappearance of dinosaur fossils.
Astronomers studying the planet of Acer have detected igneous rock under its surface. One astronomer makes a claim that some of the material that this igneous rock formed from used to be in sedimentary rock on the surface of Acer. If the scientist is correct, how could the sedimentary rock have become igneous rock?
Answer:
Sedimentary rocks becomeigneous rocks when sedimentary rocks are exposed to heat and pressure. Then they melt into magma and then the magma cools off and solifides to a igneous rock
Explanation:
The astronomer could be correct based on the fact that igneous rock is formed when sedimentary rock undergoes heat and pressure.
How igneous rock is formed?
This type of rock is formed from sedimentary rock. The rock forms as heat is applied on sedimentary rock.
These rocks are formed as hot molten magma that purs on the earth crust is cooled down and solidifies.
Read more on igneous rocks here: https://brainly.com/question/20538428
#SPJ2
PLEASE HELP MEEEE!!!!!
A. Identify ONE type of boundary data shown on the map.
B. Identify the region of the United States where most dairy farms are located.
C. Identify ONE spatial pattern shown on the map.
D. Describe the characteristic land use associated with the spatial pattern shown on the map.
E. Describe TWO geographic features not shown on the map that would help explain the patterns of dairy farming shown on the map.
A. Political boundary of the states of US.
B. Wisconsin
C. Dairy farms are located near great lakes.
D. Land is used for growth of corn and nutritious grass like alfa-lfa
E. Vegetation and Rainfall
Explanation:
A. The map consists of Political boundaries of the US states and the US mainland. In Geographical terminology, a political boundary refers to the imaginary line separating two or more than two political units. From the map, it is clear that most of the political boundaries of the US states are geometrical. They normally follow a particular line of longitude or line of latitude. E.g. State of Colorado is delimited by latitude 37° N to 41°N which defines its political boundary.
B. In the map, the state of Wisconsin has the highest concentration of the dairy farms when compared to the other states. The state is known to be amongst the leading dairy producer in the US and is nicknamed as “America’s Dairyland”. The high concentration of dairy farms in Wisconsin can be attributed to the proximity of the region to great lakes, optimum temperature and growing season, nutritious feed availability and superior breed of milch cattle.
C. One spatial pattern visible in the map is that most of the dairy farms are located in the vicinity of the great lakes along the North-Eastern part of the US. This high concentration of dairy farms in the region around Great lakes is due to the optimum temperate weather beneficial for dairy production, nutritious alfalfa grass and corn that is grown for feed purpose and success of the commercial dairy operation in these regions.
D. One characteristic land-use feature associated with the dairy farms is the use of large swaths of land to grow corn and nutritious alfalfa grass. Earlier, these lands were devoted to the cultivation of temperate wheat. However, the success of commercial dairy farming in the region has led to the introduction of extensive farming methods where large farms are devoted to corn and alfalfa production. Application of manures, usage of machines is very high and the overall yield of the farms is very high but yield per unit of land is low.
E. Two geographic features not shown on the map that corroborates to the above concentration pattern are-
Vegetation- Temperate grassland (Prairie) of these regions provides large and extensive ground for the cultivation of fodder grass. Prairie supports the cultivation of these grasses. Rainfall- These areas receive plenty of rainfall from humongous freshwater lakes in their vicinity. This rainfall proves crucial for cultivation for animal feeds.What are the four possible
protein bases, or nucleotides?
Answer:
Adenine (A) , Cytosine (C), Guanine (G), and Thymine (T)
Answer:
Adenine (A) , Cytosine (C), Guanine (G), and Thymine (T)
Explanation:
hope this helps
Explain your ideas about stars. Provide reasons to support why you think some of the statements describe stars and why some do not describe stars.
Answer:
Well, to start out, stars are reayling just huge balls of exploding gas. Constant fusion is always taking place benith their surfaces (not that they really have a solid surface). Stars tend to get bigger as they age, and darker two. Younger stars would ussually be smaller and more yellow than an older one. Older ones are bigger and have more of a redish color.
true or false informal labor is part of every country’s economy
Answer: True
Explanation: Google
Answer:
True
Explanation:
Examples:
street food and street vendorsbabysittingtutoring peers for moneyprivate language classes.A pyramid shaped building is 830 ft tall with a square base that is 151 ft on each side. What is the volume of the pyramid?
Answer:
62,665 ft squared
Explanation:
The quinary industry sector can be thought of as a branch or addition from which sector?
Quaternary
Secondary
Primary
Tertiary
Answer:
Quaternary sector
Explanation:
The quinary industry sector can be thought of as a branch or addition from Quaternary sector.
The quinary sector is the branch of a country's economy where high-level decisions are made by top-level executives in the government, industry, business, education, media and nonprofit organizations. The quinary sector is the top economic sector.
The quaternary sector is based on pure knowledge and skill of a person. It consists of intellectual industries providing information services, such as computing and ICT (information and communication technologies), consultancy (offering advice to businesses) and R&D (research, particularly in scientific fields).
The Great Plains are also referred to as
Answer:
it can also be Great American Desert!
Explanation:
hope it helps
can I get brainliest
The Great Plains, located in central North America, are commonly referred to as 'The Breadbasket of the World' due to their abundant grain production. They are also known as the 'Grasslands' because of the vast prairies and grasslands.
Explanation:The Great Plains are often referred to as 'The Breadbasket of the World'. This term reflects the fact that the Great Plains provide a significant portion of the world's grain supplies, such as wheat, corn, and soybeans. They are also referred to as the 'Grasslands' due to the predominance of tall grasslands and prairies in the region. The Great Plains stretch over central North America, from Texas in the south to Alberta in Canada in the north, and are characterized by their flat terrain and semi-arid climate.
Learn more about Great Plains here:https://brainly.com/question/33147887
#SPJ6
Do these hot-spot volcanoes tend to erupt more explosively than other
volcanoes?
Answer:
Not really, it depends on it's gas and velocity
Explanation:
Answer:
Most hotspot volcanoes are less explosive than other volcanoes
Explanation:
This is because they are basaltic means the volcano has persistent periods of activity, and creates a lava that is very fluid
How did monsoon flooding affect the development of civilizations in the Indus River Valley?
Answer: decimated the civilization as water supplies for farming dried up,
Explanation: The deliberately eastward migration of monsoons across the Asian mainland originally sustained the construction of the Harappan society in the Indus valley by authorizing the exhibition of large agricultural oversupplies
Final answer:
Monsoon flooding affected the development of civilizations in the Indus River Valley by leading to drought conditions and population decline. The residents of the civilization heavily relied on the monsoon rains for agriculture.
Explanation:
The development of civilizations in the Indus River Valley was heavily influenced by monsoon flooding. The Indus Valley civilization, also known as the Harappan civilization, relied on the monsoon rains for agriculture. However, weakened monsoon rains led to drought conditions, which had a devastating effect on the population of the civilization.
The residents of the Indus Valley developed some systems of water supply, but their dependency on the monsoon rains made them vulnerable. As arid conditions increased, many people from the civilization began moving to other areas in search of better conditions.
Which Australian river provides hydroelectric power and water for irrigation?
A.
the Darling
B.
the Murray
C.
the Cooper
D.
the Waikato
Answer:
B. The Murray
Explanation:
The Scheme collects and stores the water that would normally flow east to the coast and diverts it through trans-mountain tunnels and power stations. The water is then released into the Murray and Murrumbidgee Rivers for irrigation.
The Australian river provides hydroelectric power and water for irrigation is the Murray. Thus the correct option is B.
What is River?A river is referred as a source of fresh water which is mainly used in drinking and irrigation in the agricultural field. In some cultures, the rivers have seemed as a source of devotion and often poeple worship them.
The Murray River is one of the world's longest navigable rivers. The South Australian border is where it is primarily found. The longest river in Australia is that one. 1,558 miles or 2,508 kilometers make up its length.
The largest hydroelectric project in Australia is the Snowy Mountains Scheme. It offers irrigation-related water for the Murray and Murrumbidgee Rivers as well as additional electricity.
Therefore, option B is appropriate.
Learn more about Murray River, here:
https://brainly.com/question/924644
#SPJ2
Spain is number one in the world for electricity generated from renewable sources. true or false
Answer: False
Explanation: Spain isnt the number one in the world for electricity generated from renewable sources,
Answer:
I believe the answer would be false.
Follow these instructions, and fill in the table for different values of the diameter. Round your answers to the hundredths place. Move the slider to roll the circle. As you roll the circle, the circumference of the circle unfolds along the x-axis and the length of the circumference appears below. Once you have completely rolled out the circumference, fill in the table for the specific diameter you used. Roll the circle back to its original position. Change the diameter by moving the blue dot on the y-axis. Repeat these steps for each new diameter that you choose
Answer:
Diameter Circumference Ratio of Circumference to Diameter
4 12.57 3.14
3 9.42 3.14
2 6.28 3.14
5 15.71 3.14
5.57 . 17.51 3.14
Explanation:
The question involves a hands-on experiment to find the relationship between the diameter and circumference of a circle and visualize it on a graph, demonstrating the formula C = πD.
Explanation:The question involves using the geometric properties of circles to determine the relationship between a circle's diameter and its circumference. When the circumference of the circle is completely rolled out, the length of this can be observed along a linear distance, which in essence is the circumference itself. From this experiment, one can deduce that the circumference (C) of a circle is directly proportional to its diameter (D), following the formula C = πD, where π (pi) is a constant approximately equal to 3.14159. By changing the diameter and recording the resulting circumference after rolling the circle, students are empirically finding values that support this formula. The data collected should then be plotted on a graph with the diameter on the x-axis and circumference on the y-axis to visualize this proportional relationship.
The parts of the Earth near the equator receive more sunlight than the north or south poles. How does this impact the climate at the equator?
Answer:
Its hotter
Explanation:
Due to the direct sunlight compared to angular sunlight on the poles, the equator is gets much hotter and holds a more tropical climate due to direct heat from the sun
15. What joint United States-Canadian project reduced pollution in the Nashua River
and encouraged the construction of wastewater treatment plants?
a. the Great Lakes Water Quality Agreement
b. the North American Free Trade Agreement
c. the Clean Water Act
d. the Dayton Accords
Answer:
A
Explanation:
The Clean Water Act, passed by the United States in 1972, was the project that reduced pollution in the Nashua River and supported the creation of wastewater treatment plants. This impacted both the US and Canada.
Explanation:The project that reduced pollution in the Nashua River and encouraged the construction of wastewater treatment plants was c. the Clean Water Act. This act, enacted by the United States in 1972, aimed to address significant water pollution issues. One of the objectives was to construct municipal wastewater treatment plants, which had a huge impact on the improvement of water quality in the Nashua River. Although it is a US legislation, it also affected Canada through transborder pollution issues, hence it was a joint United States-Canadian effort in a broader sense.
Learn more about the Clean Water Act here:https://brainly.com/question/4004573
#SPJ3
True or False: Mountain ranges and volcanic islands can result from changes to Earth’s surface over a long period of time. Help please, I'm dumb and can't remember the answer to this question.
Answer:
True
Explanation:
Because the Earth goes through several physical changes over a period of time. In the scenarios that you described, they are formed when Tectonic Plates run into each other.
Spientists have been able to estimate the age of our solar system by dating
asteroids
meteors
meteorites
comets
Answer:
By studying several things, mostly meteorites, and using radioactive dating techniques, specifically looking at daughter isotopes, scientists have determined that the Solar System is 4.6 billion years old. So its Meteorites
Explanation:
Why are trees growing in manicured or landscaped areas not useful to study past climate conditions?
Answer:
Because they are just growing and only for beautification. They don't send any fossils
The Green Revolution is best described as?
Answer: The Green Revolution was a period when the productivity of global agriculture increased drastically as a result of new advances.
Answer:
The Green Revolution was a period when the productivity of global agriculture increased drastically as a result of new advances. During this time, chemical fertilizers, pesticides, and herbicides were created.
Hope this helps!!
Please give Brainliest!
Match the descriptions to the Bolsheviks or the Mensheviks.
believed that revolution was the
only way to bring about change
thought the proletariat would take
control when they were ready
joined the White Army during
the Russian Revolution
led by Vladimir Lenin
believed that reform would
come about gradually
joined the Red Army during
the Russian Revolution
Answer:
Bolsheviks:
Believed revolution was the only way to bring about change.Led by Vladimir Lenin.Joined the Red Army during the Russian Revolution.Mensheviks:
Believed reform would come about gradually.Thought the proletariat would take control when they were ready.Joined the White Army during the Russian Revolution.Answer:
Bolsheviks:
-Believed revolution was the only way to bring about change.
-Led by Vladimir Lenin.
-Joined the Red Army during the Russian Revolution.
Mensheviks:
-Believed reform would come about gradually.
-Thought the proletariat would take control when they were ready.
-Joined the White Army during the Russian Revolution.
Explanation: