Which of the following is true concerning continental crust?a. It does not contain radioactive elements.
b. It mostly contains heavier and denser minerals than the mantle.
c. It efficiently transfers heat from the mantle to the surface.
d. None of the above

Answers

Answer 1

Answer: The best answer would be letter D. There is no statement in the choices given that would be considered true concerning continental crust. The crust does not contain radioactive elements, and it is lighter and less dense than the mantle. Also, heat transfer goes from crust to mantle.

Answer 2

Answer:

Which group contains mostly radioactive elements?

alkaline earth metals

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A/n _______ front is a type of collision in which cold, dense air displaces warm air, and forces the warm air up along a steep slope.a. occluded
b. cold
c. stationary
d. warm

Answers

The correct answer is B. A cold front is defined as the transition zone where cold air replaces warmer air. It move from northwest to southeast. The opposite of the cold front is the warm front where warmer air replaces a cold air.

Why were Greek villages islated

Answers

Because of the geographical location and monsoon season happened cuasing large water basins

The mountains circled in yellow on the map above are the __________. A. Pacific Mountains B. Appalachian Mountains C. Rocky Mountains D. Continental Divide

Answers

The Appalachian Mountains are being denoted here, which tells about the Mountains circling in yellow on the map above. Hence, option B is appropriate.

What are the Appalachian Mountains?

The Appalachian mountains are one of the oldest mountains in the World. The most crucial thing regarding this mountain is that these mountains are also spread over some 1,600 miles of landscape. The Appalachian Mountains are the oldest and also the longest of the Mountains in the United States of America.

The Appalachian Mountains are well understood to have been home to some of the most important as well as the primitive and indigenous tribes of the American area. The Appalachian Mountains are also very rich due to their natural resources which are present almost in abundance.

The most important thing is that previously, the Native Americans used to settle in the Appalachian mountains, now more than 20 million population resides over there.

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Answer:

Option B is correct.

Appalachian Mountains, also called Appalachians, great highland system of North America, the eastern counterpart of the Rocky Mountains. The Appalachians first formed about 480 million years ago during the Ordovician Period. They once reached elevations similar to those of the Alps and the Rocky Mountains before experiencing natural erosion.

Explanation:

Got it right on the test

What is the principal crop for East Asian nations?
rice
wheat
corn
barley

Answers

The principle crop raised in East Asia is rice!
In fact, some scientists suggest that the very specifics of rise farming is what has caused the cultures in East Asia to be collectivist: growing rice is only possible with human cooperation (much more than growing wheat) and it forced people to cooperate better.

Answer:

rice

Explanation:

What types of pollution caused by humans are worsening the condition of the coral reefs?

Answers

There are several types of pollution caused by human activities that are contributing to the deterioration of coral reefs. The first and most significant type is chemical pollution.

This includes oil spills, pesticides, herbicides, fertilizers, and other chemicals that are being dumped into the oceans. These chemicals can leach into the coral reefs, disrupting the delicate balance of the ecosystem and causing damage to the coral.

Another type of pollution is plastic pollution. Plastic waste is one of the most significant environmental issues facing our oceans today. Plastic waste is ingested by marine life, including coral, and can cause physical harm. Plastics also release toxic chemicals when they break down, contributing to the chemical pollution problem.

Sedimentation is also a significant issue facing coral reefs. When soil is eroded from construction sites or farming activities, it can find its way into the ocean and smother coral reefs. This can reduce the amount of light that reaches the coral, inhibiting its ability to photosynthesize and grow.

Finally, global warming and climate change are also contributing to the decline of coral reefs. As temperatures rise, coral becomes more susceptible to disease and bleaching, which can kill large areas of coral. Additionally, ocean acidification, which occurs as the oceans absorb more carbon dioxide, can make it more difficult for coral to build their skeletons and grow.

Overall, the combination of these types of pollution is contributing to the decline of coral reefs around the world, and urgent action is needed to reduce our impact on these vital ecosystems.'

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Which website is most likely to be a trustworthy source of information on the dangers of tobacco use