How might you tell, by looking through the microscope, if something is a cell

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.

3test questions with answers on incomplete dominance

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?