Many animals have adaptations that help them escape from their enemies. Some insects are hidden by their body color or shape, and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near.
Organisms have a great variety of ways of adapting. They may adapt in their structure, function, and genetics; in their development and production of the young; and in other respects. An organism may create its own environment, as do warm-blooded mammals, which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage, but sometimes an organism is so well adapted to a particular environment that if conditions change, it finds it difficult or impossible to readapt to the new conditions.
1. Some plants and animals develop superior characteristics so that they may
A) help others of their kind get food, shelter and other things needed.
B) survive even in extremely severe conditions.
C) become better adapted to the environments than others of their kind.
D) result in the evolution and production of more intelligent organisms.
2. In the first paragraph, the word environments could best be replaced by
A) contexts.
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