Ordovician Period
The Earth was covered in this during this time period?
What is water
What developed lobed fins and was the first animal to walk on land?
What is a fish?
Plants started to bear these during this time period.
What are seeds?
This kind of environment took place on land during this time period.
What is arid and dry?
Plants gained this during this time period.
What are flowers?
What is the animal that arrived during this time period called? (animal with backbone)
What is a vertebrate?
What did the fish that walked on land evolve into?
What is an amphibian?
This kind of animal became more common during this time period.
What is a reptile?
This kind of environment took place around riverbeds during this time period.
What is moisture rich?
These animals roamed the Earth during this time period.
What are Dinosaurs?
This time period with a wipe out of a complete species. What is this process known as?
What is Mass Extinction?
This other type of animal could live on land during this time period.
What is an invertebrate?
Blank out of 4 species became extinct during this time, and blank % of sea biodiversity disappeared during this time.
What is 3 out of 4 and 96%?
This animal roamed the Earth during this time period.
What is Archosaurs?
What other animal evolved during this time period?
What are insects?
What caused the mass extinction during this time period?
What is plate tectonic movement?
Terrestrial plants became this during this time period.
What is biodiverse?
This caused the mass extinction of this time period to happen.
What is an excessive increase of greenhouse gasses, lack of oxygen, and increase of mercury levels in the water?
This level riding in the ocean contributed to the mass extinction of this time period.
What is acid levels?
What major event started to take place during this time period?
What is continental drift?
What event concluded this time period?
What is Sea level decreasing and land formation?
This time period ended in this.
What is mass extinction?
This time period ended with this kind of Earth environment.
What is sea level rising and volcanoes erupting?
This land event contributed to the mass extinction of this time period.
What is volcanic eruptions?
This hit Earth during this time period causing a mass extinction.
What is an Asteroid?