↓asap! ↓these are the two most abundant gases in our atmosphere, combining to equal 99% of the atmospheric composition. 1) nitrogen and carbon dioxide2) carbon dioxide and oxygen3) oxygen and nitrogen4) nitrogen and argon

Select the best answer for the question, ly 12. which of the following behaviors is not an inherited behavior?

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.

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels