When a car uses a gallon of gas, how much carbon dioxide is emitted into the environment? 25
7
19
11

What are some characteristics of a free enterprise economy?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above