B. Consumers produce Co2 for which plants need to allow photosynthesis to turn back into oxygen.
So abiotic means nonliving, so the only abiotic option is B. the gravel on the bottom of the aquarium.
Active transport is usually associated with accumulating high concentrations of molecules that the cell needs, such as ions, glucose and amino acids. Examples of active transport include the uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plants.
sorry if it did not help
Okay, so how well do you understand the reading? According to the condensation excerpt, the fourth choice for the fiest question would be the answer. And as for Question 12, the third option would be the answer because the balloon got bigger when the gas was heated ans smaller when the gas was cooled.
