Repeating tests usually leads to
O more independent variables.
more accurate measurement.
O more confidence in the results.
O more controls in an experiment.

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.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"