The Amazon River watershed contains the greatest variety of organisms on land.
In the ocean the top layer has the greatest variety, because it is closest to the sunlight.
The Amazon rain forest.
abdomen umbilical
a group of organisms that can reproduce only among themselves and that are usually contained in a geographic region.
to place events on the geologic time scale
The topography of the land affects where people choose to live. People will not live in areas where they land makes it difficult to survive.
A region is an area that has something special that is common to the area.
the answer is Africa
The number or variety of organisms found within a specified geographic region.
High latitudes .
I think its high latitude regions
Answer to region contains fertile valley
Answer to region contains fertile valley
The Subarctic region contains the most big cities.
The largest tundra region is Siberia.
Climate has the greatest impact on an ecosystem.
Land feature and proximity to oceans has the greatest effect on determining the climate of a region.
arctic region
Xizang