what impact did the presence of cyanobacteria have on the earth?

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what impact did the presence of cyanobacteria have on the earth?

2007-10-11 16:40:09 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Botany

3 answers

helped form medicine.

2007-10-11 16:42:26 · answer #1 · answered by DiDude 5 · 0⤊ 1⤋

1. One of the first photosynthetic organisms. They're thought to be responsible for the presence of O2 in the atmosphere. There are other early photosynthetic organisms, but cyanobacteria were the dominant autotrophs until the rise of plants.
2. "Ancestors" of plants (thought to be the endosymbiont that later became chloroplasts).

2007-10-12 01:33:36 · answer #2 · answered by yutgoyun 6 · 0⤊ 0⤋

Cyanobacteria were the first forms of life. All life arose from those first organisms.

2007-10-11 23:44:15 · answer #3 · answered by Lady Geologist 7 · 0⤊ 1⤋