The answer to this question would be D.) Permafrost prevents penetration of deep roots.
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Answer:
The nervous system and the endocrine system are both necessary to maintain homeostasis and keep the human body alive.
The carbon cycle describes the way the element carbon moves between the Earth's biosphere, hydrosphere, atmosphere, and geosphere. It is important for a few reasons: Carbon is an essential element for all life, so understanding how it moves helps us to understand biological processes and factors that influence them.
Source: Google
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It should be true due to adaptations. when a bird doesn’t stay for winter weather so it adapts by migrating to the south during the cold weather
