Hello please help all help is appreciated

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.

Si el equipo no fuera bueno no con el entrenador.

How can an organ, such as the lungs, work for multiple body systems?