It can affect their process where cellular respiration or photosynthesis outcome. sometimes it results
Answer: negatively; electron.
In a chemical bond, proton and neutron didn't take action since they are located in the middle(nucleus) of the atom. The electron which on the outer side of an atom can interact with another electron from an other atom/molecule. Electron has negative charge, while proton is positive and neutron is neutral.
3. I would kinda say 1 but the soil wouldn't be more polluted if there wasn't as much water in the stream, to begin with.