Which examples describe how a bear will overcome the challenge of maintaining its structure?

choose all answers that are correct.

a.

the bear's wound will heal after an injury by forming a scab.

b.

the bear will go into hibernation when winter arrives to preserve energy and heat.

c.

the bear will reproduce.

d.

the bear will defend itself against threats.

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

How do you date a sample of rock that you suspect as being one of the earliest on earth