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.
B) surroundings.
C) neighbors.
D) Enemies.
3. It can be inferred from this passage that the feathers of a bird are colored
A) to frighten its enemies.
B) to attract its enemies.
C) to adjust its body heat.
D) to match its environment
4. Which of the following is not directly mentioned in the passage?
A) A living thing way adapt in its structure.
B) An organism may adapt in its function.
C) A living creature may adapt in its genetic makeup.
D) A living organism may adapt in its sleeping habit.
5. The author cites the behavior of warm-blooded mammals in order to that a living thing may have the ability
A) to create an environment of its own.
B) to remain still when an enemy is near.
C) to make food from inorganic chemicals.
D) to change the color of its skin.
KEYS: CBDDA
