What role do bacteria play in an aquaponics system?
they transform fish waste into plant food.
they enrich the water to fish grow.
they break down dead plant matter.
they warn that the fish are sick.

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

Amap's orientation is typically determined by an