Answer:
Shivering to generate heat on a cold day
Explanation:
The body reacts to create a stable internal environment.
The answer is; It provided clues for scientists to develop a hypothesis about the origin of flight.
Scientists now postulate that dinosaurs are the ancestors of birds. This because the Microraptor is a dinosaur with feathers in all its limbs. It is also the smallest dinosaur to every been discovered and has been compared with the Archaeopteryx (involving even genetic sequencing) to hypothesize how dinosaurs evolved into birds.
I think you forgot to give the options along with the question. I am answering the question based on my knowledge and research. <span>The lowest level of environmental complexity that includes both living and non living factors is the ecosystem. I hope that this is the answer that has come to your desired help.</span>
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