Question

Why does the combination of respiration and photosynthesis allow a sealed environment to survive almost indefinitely?
A. They recycle each other's materials.
B. They do not allow a sealed ecosystem to survive.
C. They each sustain a different part of the food chain.
D. They create new energy to be used.

Answer 1

Answer:

A. They recycle each other's materials.

Explanation:

Respiration brings out carbon dioxide which is good for photosynthesis.

And photosynthesis also brings out oxygen used for respiration.

Hope it helps.

Answer 2

The combination of respiration and photosynthesis allows a sealed environment to survive almost indefinitely because they recycle each other's materials. Thus, the correct option is A.

What is Photosynthesis?

Photosynthesis may be defined as the process through which plants and other photosynthetic algae synthesize their own food (glucose) with the help of carbon dioxide and water in the presence of sunlight.

The product of photosynthesis i.e. oxygen gets utilized in the process of respiration, while the outcome of respiration i.e. carbon dioxide gets utilized in the process of photosynthesis.

Therefore, the correct option for this question is A.

To learn more about Respiration and photosynthesis, refer to the link:

https://brainly.com/question/19485531

#SPJ5