How are gases exchanged in sponges
How are gases exchanged in sponges?
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The gas exchange in sponges takes place by diffusion from the exterior to cells which absorb molecular oxygen and release carbon-dioxide.
State some factors through which the organism can understand that the process of clotting should begin?
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How is it described that a person with spinal cord sectioned at cervical level is still capable to carry out the patellar reflex?
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Briefly define the term motivation?
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Write down the types of fecundation which happens in arthropods?
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