Which condition is a biotic factor of an aquarium ecosystem?
o amount of oxygen in the water
temperature of the water
o
algae growing on the glass
o
gravel on the bottom of the aquarium

Algae growing on the glass

Explanation:

biotic means it's alive, while abiotic means it's not alive

The answer is the algae one!

Explanation:

I took the K-12 test and got 100%!

the answer is c.) there is a warm front in region a and a stationary front in region b.

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg