A. How predators find, catch, and eat prey Behaviors that help prey avoid predators Changes in predator and prey populations Defensive coloration in prey animals
A. It is conserved. B. It is light and fluffy. C. It is denser than ice. D. It is very dirty.
A. They naturally prey on geese and ducks. B. They are the largest of all predatory birds. C. They are more intelligent than geese. D. They can fly faster than any other bird.
A. To explain why it snows frequently in the mountains B. To show why mountain scenery attracts many visitors C. To describe conditions that lead to glacier formation D. To compare mountain glaciers with Arctic ice sheets
A. To explain that certain conditions are necessary for the formation of permafrost. B. To suggest that permafrost is more common than many people believe. C. To emphasize the changes in permafrost that have occurred due to global warming. D. To illustrate that alpine permafrost can be found at low latitudes.
A. define B. recognize C. relate D. orient
A. Singapore B. China C. Hong Kong D. India
A. The concept of defense mechanisms was abandoned. B. New terms were introduced for the same mechanisms. C. Modern researchers improved upon Freud's theory. D. Additional categories were introduced by researchers.
A. He would probably be a master craftsman. B. He would have an aptitude for both art and science. C. He would be interested in classical philosophers. D. He would value logic at the expense of creativity.
A. The discovery of the Alpha Centauri system B. The reason solar systems are confused with galaxies C. The vast expanse of the universe around us D. The model at the National Air and Space Museum
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