Who are thought to be the first people to breed dogs for specific traits?

Blood, made up of red and white blood cells, work together to form

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.

The transport tubes for food coming down the plants are called?