Biology alleles question

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.

When plants use sunlight to make food, the energy of sunlight is

What is any method of measuring the age of an object or event in years, such as using atomic half-life?