Question

which of these is a biotic factor in an ecosystem? *
temperature
rocks
grass
water
which process recycles nutrients but does not recycle energy?
food webs
nutrient cycles
photosynthesis
energy flow

Explanation:

Biotic factors are living components in an ecosystem. Grass is living while temperature, rocks and water are abiotic. Nutrient cycles recycle nutrients in an ecosystem without recycling energy as energy flows in one - direction.

Answer:

1. C. Grass
2. B. Nutrient cycles