Which of these scenarios is an example of natural selection? a. Farmers crossbreed two types of cows to produce a breed of cow that has high-quality beef and can tolerate a hot climate. b. Dogs that have a desirable coat color are bred with one another to produce puppies with the same coat color. c. Giraffes that have longer necks survive a dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year. d. People kill rattlesnakes that rattle when approached by humans, but people do not kill rattlesnakes that remain silent. The quiet snakes survive and breed.
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Which scenario is an example of natural selection?A.) People kill rattlesnakes that rattle when approached by humans, but people do not kill rattlesnakes that remain silent. The quiet snakes survive and breed.B.) Farmers crossbreed two types of cows to produce a breed of cow that has high quality beef and can tolerate hot climate. C.) Giraffes that have long necks to survive a dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year.D.) Dogs that have a desirable coat color are bred with one another to produce puppies the same coat color
Adi S.
which of the following is an example of natural selection? Explain why. A. cricket frogs prefer to sleep during the day,while red-eyed tree frogs prefer to sleep during the night. B. rabbits with a mutation for longer,thicker fur survive an unusually cold winter,while many normal rabbits do not survive. C. to produce a more desirable fruit,a farmer crosses a tree that produces sweet oranges with a tree that produces large organges. D. pesticides are sprayed in a field, resulting in an increase in crop growth and a decrease in insect population.
Natural selection is sometimes described as "survival of the fittest." Which of the following best measures an organism's fitness? a. how many fertile offspring it produces b. how strong it is when pitted against others of its species c. its ability to withstand environmental extremes d. how much food it is able to make or obtain
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