Evidence of Evolution

What shows evidence of the evolution of species over time?

• Fossils

• Meteorites

• Artifacts

• Minerals

What can be used to determine how old fossils are?

• Thermometer

• Microscope

• Telescope

• Radiometric dating

What suggests that all living things share a common ancestor?

• Breathing oxygen

• Consuming the same food

• Having different habitats

• Sharing some of the same DNA sequence

What leads to changes in species over time?

• Changes in water levels

• Changes in DNA

• Changes in landscape

• Changes in weather

What are 'homologous structures'?

• Parts that are similar across different species

• Structures that store water

• Structures that produce energy

• Parts that are unique to each species

What are vestigial structures?

• Structures an organism has but does not use

• Structures used for digestion

• Structures that detect light

• Main structures used for movement

Why do organisms have vestigial structures?

• Because it helps them find food

• Because they will develop a use for it in the future

• Because they need it for survival

• Because what they evolved from used that structure

What is suggested by the embryos of vertebrates being very similar?

• They all have the same diet

• They are all aquatic

• They will grow into identical organisms

• They share a common ancestor

What does biogeography study?

• The distribution of minerals

• The patterns of weather

• The geographical distribution of organisms

• The history of geological formations

What is another method besides radiometric dating to determine the age of fossils?

• Relative dating

• Carbon dating

• Counting tree rings

• Measuring water depth