I believe the answer is B, primary active transport. Root hair cells in plant use active transport to absorb mineral ions such as nitrates from the soil. The concentrations of minerals in the soil are lower in the soil than in within the root hair cell, therefore the transport will be against the concentration gradient which does not favor diffusion, therefore the pant has to use active transport.
I THINK its D I am NOT positive but I hope it helps, again I am not sure.
Answer:
3 . Monomers
Explanation:
monomer is the term for a singular string
If I’m not mistaken it’s “a scientific theory best explains certain observable facts.”
Answer:
After it passes through the esophagus, the food moves into the crop where it is stored and then eventually moves into the gizzard. The gizzard uses stones that the earthworm eats to grind the food completely.