Answer:
It controls opening and closing movements of the stomata, but that isn't one of the answer choices.
Explanation:
Answer:
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Explanation:
Free-living flat worms = carnivores or scavengers
Have digestive cavity, mouth, pharynx
Parasitic Flatworms: = Feed on blood, tissue fluids, or pieces of cells from within a host
