Sunlight? air? i’m not sure they could all be matter..
Answer:without predators, to keep prey from producing too many and over eating, the ecosystem suffers as there isn’t enough for the prey themselves to eat.
Explanation:
I'm assuming that C is carbon.

55.1259 g of C
1. True 2. False 3.false 4. False 5. True
Pretty sure it's the Precambrian.