Darwin suggested that within any species of animal, minor variations exist perhaps ini, 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. Darwin's finches provide a good example. If a bird has a beak that help it obtain
food, it has a better chance of survival, so in time, only finchen 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 Othern called it survival of the
fittest. It simply means that organisms that best adapt to a changing environment survive,
while those that don't lose out, and eventually die off.
Which of the following is an example of natural selection?
A
Over time, the Earth's 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.
С
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
Earth's axis as it revolves around the sun.
Mi