Which best describes the relationship between evolution and natural selection?

Natural selection leads to evolution.

Evolution leads to natural selection.

Natural selection is the same as evolution.

Evolution and natural selection are not related.

The map shows the allele frequency of sickled hemoglobin (HbS) and malaria endemicity in Africa. Which statement best explains the relationship between HbS allele frequency and malaria endemicity in Africa?

When an area is malaria free, the HbS allele frequency is between 0 and 4.04.

When an area is holoendemic, the HbS allele frequency is between 0.52 and 4.04.

When an area is malaria free, the HbS allele frequency is between 12.64 and 18.18.

When an area is holoendemic, the HbS allele frequency is between 0 and 0.51.

Koalas are marsupials that are found in eastern Australia. Although their ancestors lived mostly on the ground, modern koalas spend most of their time in eucalyptus trees. This is possible because their hands and feet have strong claws and opposable digits.What other adaptation could have helped koalas as they evolved from land dwellers to tree dwellers?

the ability to have several offspring at one time

fur color that closely matches the eucalyptus bark color

longer hind legs that allow for faster running

better ability to communicate with their peers

Charles Darwin observed a unique beak size and shape in the finch population of each of the Galapagos Islands that he visited. Which is the most likely cause of the observed variation?