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%!

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.