some more 7th grade science!!!!!!!!!!!!!!!!!!!!!!!!!!!! Flashcards
a formation of a new substance with different properties ;can not be undrone by physical means.
chemical change
transports nutrience and oxygen to the body.
circulatory system
breaks down food to provide nutrience and energy.
digestive system
regulates the body with hormones
endocrine system
removes waste from the body
excretory system
a change in the environment outside of the organism.
external stimulus
a response within a system that influences the activity of the that system
feedback mechanism
a push or pull that can change the position or motion of an object/material.
force
the body’s ability to keep the internal balance of body stable.
homeostasis
provides protection of the body
integumentary
a change within the organism
internal stimulus
a change in the position of an object
motion
provides movement of the body
muscular system
controls and coordinates the body
nervous system
a change which alters matter without changing its chemical compositions or the identity of the substance.
physical change
