Answer:
it is because, igneous and metamorphic form at temperatures and pressures which destroy the fossil remains. dead organisms may become sediments which may, under right conditions, become sedimentary rocks
Why can’t radiometric dating be used with accuracy on metamorphic rocks?
Answer:
The two are related because the discovery of radioactivity is that it provides a way to calculate the ages of rocks and minerals that contain certain radioactive isotopes.Radiometric dating can't be used with accuracy on metamorphic rocks because the rules of superposition only apply to sedimentary rocks.
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list down three factors which affect the climate of East Africa
Answer:
The distance of the equator, the shape of the land(topography) and prevailing winds
Explanation:
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Final answer:
Latitude, elevation, and mountain ranges are three factors that affect the climate of East Africa.
Explanation:
Three factors that affect the climate of East Africa are:
Latitude: East Africa straddles the equator, resulting in hot and humid conditions along the coast and around Lake Victoria. Cooler climates are found in the highlands and mountains.Elevation: The high elevations of the highlands create a rain shadow effect, causing drier conditions in the deep valleys or basins on the dry side of the region.Mountain ranges: Mountain ranges, such as the Rwenzori Mountains on the Congo-Uganda border, create a rain shadow effect and cut off moisture from the westerly equatorial winds.Chain migration involves the place transition from, for example, rural to central city residence through a series of less extreme locational changes, from farm to small town to suburb, and finally to the major central city itself.True / False.
Answer:
False
Explanation:
Chain migration is the social process by which migrants from a particular town follow others from that town to a particular destination, it assures that the mover is part of an established migrant flow from a common origin to a prepared destination,the prepared destination may be in another country or in a new location within the same country
Step migration involves the place transition from, for example, rural to central city residence through a series of less extreme locational changes, from farm to small town to suburb, and finally to the major central city itself
In terms of symbolizing a geologic unit/formation, which is not true? a) The first capitalized letter stands for the system/epoch of the formation. b) The second portion of the symbol is lowercase, and represents the formation or unit.c) The formation name is symbolized by capital letters. d) Colors are often used to differentiate different geographic regions.
Answer:
C. The formation name is symbolized by capital letters
Explanation:
The capital letter represents the the age of the geological unit and not the formation name. The history of the Earth has been divided by Geologists into Eons (the largest division), Eras, Periods, and Epochs , mostly based on the fossils found in rocks.
___ Mechanism responsible for the low abundance of helium of Saturn's atmosphere. Helium condenses in the upper layers to form a mist, which rains down toward Saturn's interior, just as water vapor forms into rain in the atmosphere of Earth.
what is water that is held in the ground, but above groundwater,and can be found in spaces between dirt particles following irrigation or rain ?
Answer:
aeration
Explanation:
the layer closest to the surface, where spaces between soil particles are filled with both air and water.
Which of the following tectonic settings does NOT produce volcanism? A. continental hot spots divergent B. continental-continental boundary transform boundary C. convergent oceanic-oceanic boundary D. divergent oceanic-oceanic boundary
A transform boundary is the tectonic setting that doesn't produce volcanism. This is because instead of one plate being forced under another or plates moving apart, the plates in a transform boundary slide past each other horizontally.
Explanation:The tectonic setting that does not produce volcanism is the transform boundary. In a transform boundary, tectonic plates slide past each other horizontally. This is unlike the other settings where one plate is forced under another (subduction, as in oceanic-oceanic and continental-continental boundaries) or where plates move apart (divergent boundaries) which can allow magma to rise to the surface creating a volcano. In continental hot spots or a divergent oceanic-oceanic boundary, volcanism can occur due to the upward pressure of hot mantle material. However, at a continental-continental boundary, while significant earthquakes can occur, they don't typically produce volcanoes because both landmasses are too buoyant to subduct into the mantle where magma is produced.
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this sounds dumb to ask but how do grasslands get their water
Found at the lowest point of a large drainage area, these seasonal, marsh-like ponds collect and store water from rain and runoff. Unlike vernal pools, playas generally fill when temperatures are unsuitable for plant growth, and often the water is salty, alkali or both.
source- google
Answer:
rain or aquifers
Explanation:
If you could repeat the lab and make it better, what would you do differently and why? There are always ways that labs can be improved. Your answer should be at least two to three sentences in length. The lab question was What factors affect the power of a river to cause erosion?
Answer: The lab allowed me to model and observe stream and river processes. Using a virtual model, I compared low and high velocity streams or rivers, low and high gradient streams or rivers, and low and high volume streams or rivers. I found that higher velocity streams or rivers can cause more erosion, as do higher gradient and higher volume streams or rivers. Not only did these factors move more small sediment, they also moved larger pieces of sediment.
The freshwater sources that are generally in continuous motion and follows a defined path are called streams and rivers.
If I were to improve the lab then I will make the following changes:
The experiment aimed to observe and model the effects of rivers on erosion. So, I can make a virtual model of the river and can compare the velocity, gradients and volume of rivers.Comparison between the low and high factors listed can help in computing the effect of the powerful river on erosion.The high velocity. gradient and volume of the river will cause more erosion as it exerts more force.The low volume, gradient and velocity river will affect in a less manner on erosion.To learn more about improvement in labs follow the link:
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What is the reasons for north and south Korea’s differing standards of living?
North Korea differs in standards of living because of the strict policies formed by the government as compared to the policies which are liberal in South Korea.
Explanation:
South Korea is said to be more developed than North Korea. The lifestyle of the people living in Southern area of Korea is said to be more free and liberal as compared to the northern area of Korea. People living in South Korea are paid well and enjoy better standards of living.
People in North Korea can not leave their country or move any where even with in the country without the permission. They do not enjoy as good standard of living.
What type of diffusion is the spread of Portuguese to Brazil?
stimulus, relocation, hierarchical, or contagious
Answer:
Relocation diffusion.
Explanation:
Portugal moved over into Brazil during its colonization. This brought its culture and language to Brazil.
The spread of the Portuguese language to Brazil occurred through relocation diffusion, as a result of the Portuguese monarchy's presence and governance established in Brazil.
Explanation:The spread of Portuguese to Brazil is an example of relocation diffusion. This type of diffusion is characterized by the movement of individuals who carry their cultural traits, such as language, to new locations. The presence of the Portuguese Crown in Brazil contributed greatly to the spread of the Portuguese language through a combination of political power and the institution of Portuguese-based systems, including administration and education. During the period when the Portuguese monarchy relocated to Brazil, this migration led to significant cultural and linguistic changes within the country.
It's important to note that while other types of diffusion such as contagious diffusion and hierarchical diffusion also play roles in the spread of cultural traits, the introduction of the Portuguese language in Brazil is primarily due to the physical movement of the Portuguese people and the establishment of their governance there.
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Why has Lebanon experienced so much deforestation
Lebanon experienced so much deforestation is:
- It is due mainly to overgrazing
-It is overharvesting of forest resources followed by the highly urbanized and cultivated coastal zones.
"Deforestation"Lebanon experienced so much deforestation is due mainly to overgrazing and overharvesting of forest resources followed by the highly urbanized and cultivated coastal zones.
Deforestation causes can either be coordinate or roundabout.
Among coordinate causes are: Normal causes as tropical storms, fires, parasites and surges. Human exercises as rural development, cattle breeding, timber extraction, mining, oil extraction, dam development and framework advancement.
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Before the Industrial Revolution, the flux of carbon from the terrestrial to the atmospheric pools _______ the flux in the opposite direction. Today, the flux of carbon from the terrestrial to atmospheric pools _______ the flux in the opposite direction.
Answer:
was about equal to , exceeds
Explanation:
At the beginning of the industrial revolution, the carbon content was around 280 ppm and was stable for some time, and later on as of today it has exceeds the 400 ppm atmospheric pool of gases. Due to the increase in the amount of the greenhouse gas concentration and the burning of the fossil fuels and along the increase of the urbanization processes accelerated the speed of the carbon dioxide in the air.The spectrum of an exoplanet reveals significant amounts of methane with smaller amounts of ammonia. Considering this information alone, to which planet in our Solar System might we expect the exoplanet to be similar?
Answer: URANUS.
Explanation: An exoplanet can be defined as a planet that exists outside the Earth's solar system.
Now, URANUS is a planet in earth's solar system. It is the seventh planet with twenty seven known moons. It is a gas giant although most of the planets is ice, it is therefore also referred to an an ice giant to distinguish it from the main gas giants.
It contains more "ices" such as water, ammonia, and methane, along with traces of other hydrocarbons. Because of its composition of ammonia, and methane, it can be similar to the exoplanet that reveals significant amounts of methane with smaller amounts of ammonia.
Which of the following is NOT true regarding the Chesapeake Bay?A. It is one of many small estuaries along the east coast of the United States.B. A large amount of sediment travels down the watershed into the bay.C. It receives anthropogenic chemicals that adversely affect the local fish populations.D. It receives nutrients from sewage treatment facilities.E. It experiences algal blooms from the fertilizers used on the land in its watershed.
Answer:
It is one of many small estuaries along the east coast of the United States.
Explanation:
Which of the following is NOT true regarding the Chesapeake Bay?
A. It is one of many small estuaries along the east coast of the United States.
B. A large amount of sediment travels down the watershed into the bay.
C. It receives anthropogenic chemicals that adversely affect the local fish populations
.D. It receives nutrients from sewage treatment facilities.E. It experiences algal blooms from the fertilizers used on the land in its watershed.
Why is it difficult to determine which countries belong to Europe and which belong to Southwest Asia
Answer:
Countries like Turkey and Russia span both Europe and Asia, and countries like: Ukraine, Belarus, Latvia, Lithuania, Estonia, Moldova, Kyrgyzstan, Uzbekistan, Tajikistan, Turkmenistan, Georgia, Azerbaijan, Armenia, and Kazakhstan comprise the former Union of Soviet Socialist Republics (U.S.S.R./Soviet Union; Russia effective December 26, 1991), which as a whole spanned the continents of Europe (to the west; eastern Europe) and Asia (to the east; western Asia).
The following independent republics from those listed above that are located in Europe include: Ukraine, Belarus, Latvia, Lithuania, Estonia, and Moldova.
The following independent republics from those listed above that are located in Asia include: Kazakhstan, Turkmenistan, Kyrgyzstan, Azerbaijan, Tajikistan, Uzbekistan, Armenia, and Georgia.
In general: bodies of water (including oceans, seas, and bays) serving as separations (not borders) between two or more countries, in turn separate one continent from another on a world map.
In 2004 a megathrust earthquake off the coast of Asia caused a giant __________________ which killed over 200,000 people.
Pretty sure it was a tsunami
Which star is the dimmest?
1) Deneb
2) Rigel
3) Van Maanen’s Star
4) Barnards star
Answer:
I guess that Van Maanen's Star is the dimmest
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The eastern set of mountains in Canada are called the Mountains and called the Mountains in the United States.
Who was a leader of the communist revolution in China ?
Answer: Mao Zedong
Explanation: I believe Mao Zedong lead the communist revolution in China, please let me know if I'm wrong.
If earth was a three story building with a shingle roof, how big would the atmosphere be a: as thick as the shingle roof b: as big as all three stories? c:as big as two stories d: as thick as the third story I don't think its d or c but it may be B? But why some people say its A, so im confused
Answer: as thick as single roof
Explanation: The earth is actually about 8000miles thick Xmas, with the atmosphere been 300miles thick. Comparing this or Assuming the earth three story building, it atmosphere would on be as thick as the single roof. The whole of earth needs to be atleast 20 times bigger or thicker than its atmosphere, same should apply to the building and it's roof