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a muscle, gland or organ capable of responding to a nerve impulse in order to bring about a reaction to stimuli.
the fluid that circulates through the lymphatic system. It is similar to blood plasma in...
(also called macromolecules) large, more complex molecules formed when monomers join together....
tissues that are responsible for the transport of substances within the plant.
the right and left halves of bilaterally symmetrical organisms are mirror images of each other...
the part of the atmosphere that contains the ozone layer and is about 10 km above the Earth's...