Foreign cells that enter our body have unique cell surface proteins, known as , which stimulate our body's defense to attack.

Give examples of selective advantage of organism’s body part/organ

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

Describe the impact of deforestation of both abiotic and biotic factors within the tropical rainforest.