Define/explain 'Analogous structures'

Dolphins and shares are both aquatic (live in water) carnivores. They have very similar adaptations. Are these adaptations homologous or analogous structures? Give a reason for your answer.

The camel is the poster child for desert mammals. What evidence suggests that deserts where not the original habitat of their ancestors?

Define/explain 'Homologous structures'

Explain what divergent evolution is.

Whales and dolphins share a common ancestor with the hippo (diverged about 47 mya), they are essentially cousins. They look very different to each other. Is this an example of convergent or divergent evolution?.

Land bridges currently explain how the same/very closesly related species are found on separate continents (e.g. Brown bear). How/when are land bridges formed?

Armadillos and Pangolins are not related. What possible reason can explain their similar adaptations and appearances?

What is an adaptation?

True or False: In this phylogenetic tree, Species F is more closely related to Species D than it is to Species A.

Give an example of an adaptation that an animal might have if it were adapted to very cold conditions.

Are the following structures examples of homologous/analogous structures? Give a reason for your answer: Duck billed platypus (bill) -vs- Duck (billl)

Explain what convergent evolution is.