How are levels maintained within an ecosystem? - OCR 21C test questions - OCR 21st Century

1

What does anaerobic mean?

2

What gases make up biogas?

3

What effect does lowering temperature have on the decay of milk?

4

What factors affect the rate of decay?

5

What carbon conversion occurs in aerobic respiration?

6

What process do decomposers speed up?

7

What do plants compete for?

8

What do animals compete for?

9

Which process does NOT release carbon dioxide into the atmosphere?

10

Which process results in water falling from clouds?