Answer: Thermal
Explanation: Process of elimination, no chemical reaction, or mechanical or nuclear.
Answer:
Decay adds carbon to the atmosphere.
Answer:
A cause or starting point the source of a rumor. 2 : the beginning of a stream of water the source of the Nile River. 3 : someone or something that supplies information a reference source. 4 : someone or something that provides what is needed a source of supplies a source of strength.
The male contributes the sperm and the female contributes the egg or ovum. Then they meet in the fallopian tube and becomes a zygote.
