A scientist collected data in 10 trials comparing tired students’ and awake students’ test scores.

Trial Tired Average Score Awake Average Score
1 34% 67%
2 56% 88%
3 60% 90%
4 58% 86%

Which trial was the least precise and is unlikely to be reproducible?

Which statement is a physical property? becomes moldy quicklyeasy to digestconducts electricity poorlydoes not burn

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

In what locations does this text suggest you might find zooflagellates living? fresh water lakes on the surface of leaves inside other organisms on damp forest floors