2024 Evolution Quiz ELL

Fossils are commonly found in

• sedimentary rock.

• igneous rock.

A human's arm, a cat's front leg, a dolphin's front flipper, and a bat's wing have similar kinds of bones.

• have similar kinds of bones.

• are used in similar ways.

The fact that all organisms have DNA as their genetic material is evidence that

• natural selection occurred.

• all organisms descended from a common ancestor.

The solidified remains or imprint of a previously existing organism is called a

• fossil.

• sediment.

The opposable thumb allows humans to grasp objects firmly. Because this feature helped humans to survive over time, it is called a(n)

• adaptation.

• vestigial structure.

Individuals in a population that have traits or abilities that give them a competitive advantage over other population members are more likely to survive and reproduce. This principle is called

• species separation.

• natural selection.

The theory of evolution can be explained in part by changes in an organism's DNA known as

• mutations.

• traits.

Fossils of whale ancestors show that present-day whales are distant cousins to a land-dwelling mammal called Mesonychid. These fossils provide evidence that organisms

• do not evolve over time.

• have evolved over time.

Structures and behaviors for finding food, protection, and for moving from place to place are an organism's

• selective breedings.

• adaptations.

Scientists estimate that Earth is 4.6 billion years old. This is plenty of time for

• organisms to develop adaptations.

• species to die out and be replaced by new species.

• evolution to occur.

• All of the above