WorksheetsHistory of LIfe on Earth
Total questions: 10
Worksheet time: 5mins
Which conditions necessary for life?
presence of liquid water
oxygen in the atmosphere
electricity and buildings
sunlight and moderate temperature
The early Earth's atmosphere lacks oxygen. True or False?
True
False
maybe
Reorder the following: the beginning of life on Earth
unicellular prokaryotes
unicellular eukaryotes
algae
smaller plants and animals
The changing of species over time
mutation
evolution
extinction
natural selection
What are stromatolites? Select all that apply.
Coral-reef like mounds.
Rocks
Cyanobacteria
How did the cyanobacteria produce oxygen?
By their fossils.
By nutrients.
By using photosynthesis.
The current theory is that the (a) was formed from a (b) of a (c) planet with the early (d) .
During the Cambrian Explosion, life forms generally were greater in ?
offspring
DNA contents
shells and cartilage
size and diversity
