Second grade
 Reaction: respond to the environment
 Movement: Animals move to find food and
keep away from predators, plants move to face the
light
 Reproduction: the ability to produce more
of the same kind to keep the species in existence
 Excretion: Getting rid of waste
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Stimuli - factors in the environment that living
things react to
(ex. Light, temperature, sound, etc.)
Living things will make changes in response to a
stimulus in their environment.
A behavior is a complex set of responses.

An action by an organism or part of an
organism causing a change of position or
place.
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The processes that make more of the same
kind of organism
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The removal from organisms of toxic
materials, the waste products of metabolism
(food)
chemical reactions in cells including
respiration