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Hunter-Best [27]
4 years ago
9

What are the three layers of evolution​

Geography
1 answer:
Lera25 [3.4K]4 years ago
5 0
Ectoderm, mesoderm and endoderm.
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What two airmasses are most important to the weather of the United States east of the Rocky Mountains
rosijanka [135]

Continental polar (cP) and maritime tropical (mT) air masses influence the weather of North America most.

3 0
3 years ago
The process of nomadic hunter gatherers becoming sedentary farmers.
Triss [41]

Answer:

It took climate change, fertile river valleys, domestication of crops and animals so that the hunter-gatherers became sedentary farmers.

Explanation:

Initially, all humans were hunter-gatherers. This was due to multiple reasons, with one the biggest one probably being the climate which was not enabling good conditions for the hunter-gatherers to transform their lifestyle. All other conditions needed were stopped because of the climate conditions, so humans had to do what they could to survive in those conditions.

About 10 years ago though the bad climate conditions ended, or rather the Ice Age ended. This resulted in a much warmer climate, which in turn created much more water bodies like rivers and lakes, much more vegetation, and they contributed to the creation of much more fertile soil.

With these conditions in place, the humans quickly saw that there is huge potential in some plants and animals, so they started to farm them, select the ones with the best characteristics, and gradually producing enough food for themselves. With the food problem solved, humans didn't have the need to wonder around all the time, so they started abandoning the hunter-gatherer lifestyle and started settling in one place.

6 0
3 years ago
Which type of cloud would you expect to be involved in some form of precipitation?
yarga [219]
Cumulus type of clouds are involved in producing showers and snows
Stratus types of clouds are involved in producing quite intense rain or snow.
6 0
4 years ago
The same cloud precipitates snow on a mountain and rain in the nearby valley. Does the Bergeron process or the collision-coalesc
Mice21 [21]

Answer:

Bergeron process

Explanation:

This is a process when precipitate is formed in mixed cloud of temperature below freezing because equilibrium pressure of water vapour with respect to ice is less compared to that of liquid water.

6 0
4 years ago
Identify the sphere where life first emerged on earth.
Inessa [10]

The correct answer is - Hydrosphere.

Life on Earth, emerged in the hydrosphere, at least from the findings and data so far. The reason for that was that the atmosphere and the lithosphere were still in a faze were they were not very hospitable for any living organisms to develop. The hydrosphere, or the water bodies, on the other side, were enabling conditions for life, not perfect or as we have today, but still reasonably good, so the life started developing into the water environment, and after the atmosphere and lithosphere changed over time, it spread on them as well.

7 0
3 years ago
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