The immune system is the bodies defense against invaders and is located in all body tissues with concentration in the mucosal surfaces and skin.
Answer:
dominant is the 2 capital letters heterozygous dominant is one capital and one lower case
purple
hairy knuckles normal tails
Explanation:
As human travel increases the number of introduced species in a certain environment likely increases as well. When we're moving to certain locations, with us we're bringing millions of small bacteria and other living organisms that accompany us on our hands, different parts of our bodies and clothing. All of them perhaps were not present in locations that we visit.