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Organisms that live in cold climates , such as the polar bear , have body structures that help them withstand low temperatures and conserve body heat . Structures that aid in this type of insulation include fur , feathers , blubber , and fat . In hot climates , organisms have methods -LRB- such as perspiration in humans or panting in dogs -RRB- that help them to shed excess body heat . All organisms use a source of energy for their metabolic activities . Some organisms capture energy from the sun and convert it into chemical energy in food ; others use chemical energy in molecules they take in as food .
Please check all the words that can be used instead of the target word in the same context. Note that the morphology of the target (third person singular, past tense etc.) is considered to be applied to the candidate automatically in the process of paraphrasing.