HIV, the virus that causes AIDS, is transferred through body fluids. People once thought that HIV infections were untreatable. Now, many people live relatively long and healthy lives despite being infected with HIV. A. develop new medicines.
B. treat inherited diseases.
C. change societal attitudes.
D. formulate new laws.

What is the difference between a scientific hypotheses and a scientific theory?

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.

Coral have a symbiotic relationship with what in order to eat?