If animals are fighting for food (competition) they'll be forced to kill each other or go hungry. Predation is simply when animals kill things for food. So basically it's just a whole lot of killing.
1.underground stem -- for storage of food ex. potato , ginger.
2.spines for protection ex. citrus , bougainvillea
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by diffusion process in which water oxygen diffuse directly
Answer:
a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
