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.

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !