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hind section of an arthropod's body that contains its reproductive organs and part of its digestive trait
immunity that occurs when a person's own immune system produces antibodies in response to the presence of a pathogen
behavior or physical characteristic that allows an organism to survive or reproduce in its environment
the stage of development between childhood and adulthood when children become adults and physically
a disease in which a person is both physically addicted to and emotionally dependent on alcohol
molecule that the immune system recognizes either as a part of the body or as coming from outside the body
muscular opening at the end of the rectum through which waste material is eliminated from the body
reproductive process that involves only one parent and produces offspring that are identical to the parent
autonomic nervous system
the group of nerves in the peripheral nervous system that controls involuntary actions
system for naming organisms in which each organism is given a unique two part scientific name
part of the central nervous system that is located in the skull and controls most functions in the body
part of the brain that lies between the cerebellum and spinal cord and controls the body's involuntary actions
irritation of the breathing passages in which the small passages become narrower than normal an may be clogged with mucus
the body system that consists of the heart, blood vessels, and blood; circulatory system
connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together
rigid layer of nonliving material that surrounds the cells of plants and some other organisms
part of the brain that interprets input from the senses, controls movement, and carries out complex mental processes
structure in the cells of plants and some other organisms that captures energy from sunlight and uses it to produce food
phylum whose members have a notochord, a nerve cord, and slits in their throat area at some point in their lives
closed circulatory system
circulatory system in which blood moves only within a connected network of tubes called blood vessels
relationship between two species in which one species benefits and the other is neither helped nor harmed
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