2. what percentage of time has life existed on earth (round to the nearest whole numbe

Liquid water turns into water vapor at which step in the water cycle

Which best compares habitat and niche? o niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat.o habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat.habitat is a group of organisms that live in an area, and niche is a specific species that lives in that areao niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?