<span>Answer:
Greenhouse effect; carbon cycle affect how important a particular greenhouse gas is in contributing to the greenhouse effect.</span>
Answer: C.
Explanation: During a nuclear fusion reaction, it gets squeeze together so tightly that four hydrogen nuclei combine to form one helium atom. This is called nuclear fusion. In the process some of the mass of the hydrogen atoms is converted into energy in the form of light. The same process occurs in thermonuclear (fusion) bombs.
Answer:
plant cells have a cell wall and animal cells dont
