Answer:
approximately 70%
In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth's surface while around 30% is reflected back to space and does not heat the surface.
Explanation:
Answer:
layer a is the troposphere. it is very important because we breathe air from this layer. it is also important because the water cycle happens via troposphere and greenhouse effect too.
Answer:
c. velocity of the water at the moment the sediment settled to the bottom.
Explanation:
The size of a grain determines the speed with which a stream of water will be able to transport that grain to the bottom of a system. This is because the grain size is directly related to its mass. This causes larger grains to be transported at a slower speed, as they make it harder for water to carry them, due to their weight. On the other hand, smaller grains are lighter and offer less water resistance, being carried more easily.
Answer:
D) Many of the early people groups are considered the ancestors of modern day Native Americans
Explanation:
The early people groups that started inhabiting the Americas over time started to diverge into several groups that developed different cultures. The major connection between these early people and the modern day Native Americans is that they are connected genetically, thus the modern day Native Americans are the descendants of the early people groups. Most of the other common things unfortunately have seized to exist, with the main reason for it being that most of the Native Americans have been assimilated and they have engaged into the modern way of living. There are only small number of Native Americans that practice the old ways and have more things in common with the early people groups, but even they are living a live that is mixed, so it all has been minimized.
