Nuclear fission involves
a) combining atoms
b) splitting atoms
c) alternating atoms
d) consuming large amounts of energy

The answer is B

Explanation: I just to the k12 test 3.08 nuclear power

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

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.