During redox reactions:

A. protons from one molecule replace the electrons lost from another molecule.
B. the loss of electrons from one molecule is called reduction.
C. electrons are lost from one substance and added to another substance.

C. electrons are lost from one substance and added to another substance.

Explanation:

Electrons are transferred from one reactant to another and the oxidation states/oxidation number of certain atoms are changed.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.