Question

darwin suggested that within any species of animal, minor variations exist - perhaps in size, color, shape, strength, or some other minor trait. in the struggle to find food and escape from predators, such traits might give that animal an advantage, making it more likely to survive. if the animal can pass on that trait to its offspring, they too will have this survival advantage. darwins finches provide a good example. if a bird has a beak that helps it obtain food, it has a better chance of survival, so in time, only finches with long beaks remained where the cactus grew. but where only seeds could be found for food, the strong, wide - beaked finches thrived. darwin called this natural selection. others called it survival of the fittest. it simply means that organisms that best adapt to a changing environment survive, while those that dont lose out, and eventually die off. which of the following is an example of natural selection? a over time, the earths crust started to solidify about one - billion years after the planet was formed. b over time, a species of cricket became green because green crickets were better able to hide among the leaves. c in the winter, as food becomes more scarce, some species of birds fly to new habitats in the south. d in june, the northern hemisphere gets more direct sunlight due to the tilt of earths axis as it revolves around the sun.

Explanation:

Natural selection is the process where organisms with traits that help them adapt to their environment are more likely to survive and pass on those traits. Option B shows a cricket species becoming green (a trait) because green crickets can better hide (adapt to the environment of leaves) and thus survive. Option A is about the Earth's crust solidifying (a geological process, not related to organism - trait - environment adaptation). Option C is bird migration (a behavior, not a trait change due to natural selection). Option D is about the Earth's axis tilt and sunlight (a celestial phenomenon, not related to organism adaptation through traits).

Answer:

B. Over time, a species of cricket became green because green crickets were better able to hide among the leaves.