Give two positive advantages and disadvantages of using a dialysis machine rather than having a kidney transplant

Which of these statements are true about scientific theories and hypothesis

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 many major plates cover the earth