An electron microscope forms an image by focusing beams of electrons onto a specimen. true or false.

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

How does science influence the decisions made about social, economic, and political issues?

18. which statement about cancer is true?