Which of the following is used in biogas plants to generate biogas and manure? A. Non-biodegradable substances
B. Bodegradable substances
C. Both (a) and (b)
D. Neither (a) or (b)

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

b because they naturally adapt to their environment plz mark brainliest

explanation:

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

the answer is c. it will give up it's valence electron to the other atom.