During the light reactions, oxygen (O2) is produced.
Answer:
Luminosity in relation to stars would be the amount of light emmited by a star in a unit of time.
Explanation:
A stem cell is a body cell,that is basically isnt used for reproduction.
The statement that forms the best testable hypothesis for this question, would be 2. I believe.
Answer:
ecology
Explanation:
branch of biology that deals with the relations of organisms to one another and to their physical surroundings.