1
Q:
| A) Biosphere | B) Troposphere |
| C) Stratosphere | D) Ionosphere |
Answer: A) Biosphere
Explanation:
Explanation:
A biosphere is the sum of all the ecosystems established on planet Earth.
An ecosystem is an area in which the plants and animals all interact to create a living environment. Therefore ecosystem is a smaller unit of earth, all ecosystems together form the earth.
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