Answer:
Solar energy is the most efficient compared to fossil fuels. The sun is a free and renewable source of energy. Solar energy also has less environmental impact.
Answer:
Oxidation occurs when a reactant loses electrons during the reaction. Reduction occurs when a reactant gains electrons during the reaction. This often occurs when metals are reacted with acid.
D. red shift of the galaxies in the local group!
Answer:
A
Explanation:
Evoulousion's meaning is the changing of a species over a period of time.
Semi-permeable. It is partially permeable to substances passing through.
