Living organisms have the ability to respond to changes in both the internal
and external environments and thus ensure that they maximize their chances for
survival.
Eg:-
1. The blood vessels in the skin of a mammal dial ale in responds a rise in
body temperature and the
consequence heat lost brings about a return to the optimum temperature of
the body.
2. Green plant on a window grows towards light coming through the window.
Thus ensuring maximum
exposure to light for photosynthesis.
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