Which of the following provides key evidence that 3.5-billion-year-old stromatolites indicate the presence of life on earth at that time? which of the following provides key evidence that 3.5-billion-year-old stromatolites indicate the presence of life on earth at that time? microfossils found within stromatolites that appear to be individual fossilized microbes the layered structure of the stromatolites because layering can be produced only by life the similarity in structure between the stromatolites and bacterial mats that still live today the presence of living bacteria in stromatolites.

The similarity in structure between the stromatolites and bacterial mats that still live today

Explanation:

i discarded the supernatant and kept the pellet in this part of the experiment because you have to return all unused chemicals into their original containers at the end of each labratory.

explanation:

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation: