<span>selective breeding </span>because people are breeding new things.
Ok well carries food and oxygen to different cells in the body, carries body waste away, protects the body from illness, and the bodys defense system
Protozoan infections are parasitic diseases caused by organisms formerly classified in the Kingdom Protozoa. They include organisms classified in Amoebozoa, Excavata, and Chromalveolata. Examples include Entamoeba histolytica, Plasmodium (some of which cause malaria), and Giardia lamblia.
Chimps share their habitats with lions, rhinos, elephants, other monkeys etc.