It’s above the mesosphere, but below the exosphere. It extends roughly 90 km to 500/1,000 km above. There’s a lot of solar activity that influences temperature there.
Answer:
It is B: provides for the tight regulation of all physiological variables
Explanation:
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Homeostasis:
In biology, homeostasis is the state of steady internal, physical, and chemical conditions maintained by living systems. This is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance, being kept within certain pre-set limits.
The answer is <span>B. The carbon dioxide level in the city will be higher because the exhaust gases from vehicles release carbon dioxide and there are not many trees to utilize it.
It is known that in photosynthesis, plants use carbon dioxide and convert it into organic compounds. So, in a garden, there will be a lower amount of carbon dioxide than in a city. In the city, vehicles will release it in the atmosphere and if there are not many trees to utilize it, the carbon dioxide level in the city will be higher than in the garden.</span>
