Can someone me asap with these questions. it would be greatly appreciated

answer:

(1) photosynthesis is a process plants go through to get sun and energy. it involves carbon dioxide, water, and oxygen. cellular respiration is the process that organisms use to break down food molecules to get chemical energy. it's similar to photosynthesis, but also not.

i don't know the last two, but i hope the first one : )

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.