A student spends 30 minutes walking outside on a day when the air temperature is 20°С. She then spends 30 minutes walking outside on a day when it is 0°C. On the colder day only, she finds herself very tired when she comes back inside. Explain this
observation in detail using your understanding of the concept of homeostasis.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

that scientist would be robert hooke

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