The diagram below represents part of the horse fossil record from
three time periods. It includes illustrations of the hooves and
teeth of horses from each time period.
Eocene
Miocene
Present
THE
O
Hoof Tooth
Hoor Tooth
Hoor Tooth
Which of the following statements is best supported by the horse
fossil record?
A The horse has been a carnivore,
® The horse has changed over time,
© The horse has many common ancestors.
0 The horse has lived in the same ecosystem.

What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?