What are two ways in which white blood cells fight pathogens that have entered the body? A)They produce Antibodies that work against the pathogens
B)They produce hormones to locate the pathogens
C)They surround and destroy the pathogens
D)They make digestive acids to destroy the pathogens

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.

How are agricultural practices used today

Agroup of students are walking in the park and one of them takes a picture of a pollen grain that is been blown by the wind what caption can the student use for this picture