HE ME
Choose all the answers that apply.

Mutations .

are random
delete genes from the gene pool
add new genes to the gene pool
are changes in an organism's DNA
can be caused by exposure to radioactive substances

Liquid water turns into water vapor at which step in the water cycle? a. precipitation o b. water run off c. evaporation d. condensation

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

2polnis which of the following is an advantage of an in vitro experiment?me