Many of the Oldest Known Fossils Most Closely Resemble Which

Question

Many of the oldest known fossils most closely resemble which modern organisms?
A) protists
B) viruses
C) archaea
D) blue-green algae

Accepted Answer

The oldest known fossils most closely resemble modern blue-green algae, which are a type of bacteria known as cyanobacteria. These organisms are believed to have been significant in producing oxygen through photosynthesis early in Earth's history.