Exploring the Evidence for Evolution

What does the theory of evolution claim about all living things on Earth?

• They were created at the same time.

• They evolved from a common ancestor.

• They all have the same DNA.

• They are unrelated and evolved separately.

What kind of evidence supports the theory of evolution?

• Mythological stories

• Only fossil records

• Observations from multiple fields of study

• Speculations without proof

What type of animals are included in the cetaceans group?

• Whales, dolphins, and porpoises

• Insects

• Birds

• Reptiles

Why are cetaceans considered a good focus for studying evolution?

• They have not changed over time

• They show clear evidence of evolution from land to sea creatures

• They are unrelated to other mammals

• They are the largest animals on Earth

How do whales breathe?

• Through their skin

• Using lungs to breathe air

• Through gills like fish

• They don't need to breathe

What evidence suggests that whales evolved from land mammals?

• They lay eggs

• Presence of tiny leg bones in modern whales

• They have fins instead of legs

• They have gills

What do the embryos of dolphins and humans both have at early stages?

• Gills

• Leg buds

• Wings

• Fins

How do embryological stages provide evidence for evolution?

• They prove that evolution does not occur

• Embryos of different species look completely different

• They reveal temporary structures that hint at ancestral traits

• They show no similarities between species

What did the basilosaurid whales have that modern whales do not?

• Feathers

• Small, yet fully developed hips and legs

• Blowholes on the top of their heads

• Fully developed back legs

What is Maiacetus an example of?

• A modern whale

• A dinosaur

• A walking whale

• A large fish