AP BIOLOGY

Detailed explanation-1: -If it changes more rapidly, few adaptive walks will be completed, and the population will be poorly adapted most of the time. If it changes very rapidly selection may be inadequate to restore adaptation quickly enough, and the population will dwindle and eventually become extinct.

Detailed explanation-2: -Populations that fail to adapt fast enough eventually decline to extinction.

Detailed explanation-3: -This happens by the process of natural selection. By natural selection, the nature of the species gradually changes to become adapted to the niche. If a species becomes very well adapted to its environment, and if the environment does not change, species can exist for a very long time before they become extinct.

Detailed explanation-4: -Adaptation can protect animals from predators or from harsh weather. Many birds can hide in the tall grass and weeds and insects can change their colour to blend into the surroundings. This makes it difficult for predators to seek them out for food.

Detailed explanation-5: -Extinction: When species are not able to adapt to the new environment or move out and find a new environment to live in, they eventually die out and become extinct.