A student poured a solution of bromothymol blue indicator into one test tubes. Then, he placed an aquatic plant in it, as shown below. He placed a stopper on the test tube and placed it in a sunny window for 24 hours. After one day, he then placed the test tube in the dark for 24 hours. Bromothymol blue turns from blue to yellow in the presence of CO2.

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 many copies of genes do gametes have?

Does solar energy ever run out? brainliest