Which of the following is the best definition of endocytosis? Endocytosis moves substances out of the cell and is a type of passive transport.
Endocytosis moves substances into the cell and is a type of passive transport.
Endocytosis moves substances out of the cell and is a type of active transport.
Endocytosis moves substances into the cell and is a type of active transport.

Endocytosis moves substance into the cell and is a type of active transport

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.