C : <span>Electron microscopes use a beam of electrons instead of light to magnify images</span>
C. They help with gas exchange, and the air taking up the space is lighter than the cells that could be there instead. Also, only cells can carry out photosynthesis, not air.
Answer: Definition of reproductive system. : the system of organs and parts which function in reproduction consisting in the male especially of the testes, penis, seminal vesicles, prostate, and urethra and in the female especially of the ovaries, fallopian tubes, uterus, vagina, and vulva.
Explanation:
During the first phase (G1), the cell grows and prepares for DNA replication, which occurs in the subsequent S phase.
The leading cause of death is Suicide. An odd answer but that's what it says.