Part 4 of the cat in the hat study guide Flashcards
evidence of the fossil record
1
Q
what is a fossil record
A
a fossil record a collection of fossils documenting the history of life on Earth
2
Q
what is a embryo
A
a embryo is an unborn or unhatched offspring in the process of development, in particular a human offspring during the period from approximately the second to the eighth week after fertilization (after which it is usually termed a fetus).
3
Q
what is a homologous structure
A
a homologous structure has similar physical features in organisms that share a common ancestor, but the features serve completely different functions
4
Q
what does it mean to be extinct
A
extinct means no longer in existence.
