Ion transport or active transport depending on which situation you have.
Oxygen,carbon,nitrogen and hydrogen hope this helps
The answer is T, True. Secondary pollutants are pollutants that we do not directly release, but that are created as a side effect of releasing primary pollutants, such as carbon dioxide, sulfur oxides, and particles such as ash and dust. Secondary pollutants include acid rain, ozone, smog, and CFC's (chlorofluorocarbons).
I think it’s phenotype bc phenotypes is what the natural selection acts on bc it’s what interacts with an organisms environment and not the genotype.
Answer:
They contain protein fibres that can contract when energy is available, making the cells shorter.
