Examlex
A microbe that grows in the presence of oxygen but does not use oxygen for growth is called a(n)__________ __________.
Fossilized Remains
Preserved evidence of ancient life in the form of mineralized bones, footprints, or impressions in rock.
Extinction
Extinction is the process by which a species, genus, or family of organisms ceases to exist, often due to environmental changes, loss of habitat, or competition from other species.
Paleontology
The scientific study of the history of life on Earth through the examination of plant and animal fossils.
Common Ancestor
The latest ancestor from whom all members of a group have descended directly.
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