Answer:
Explained as below.
Explanation:
Islands account for 1/6th of the earth's surface area but consist of about 30% of the biodiversity hotspots in the world.
Factors like
Interactions among predators and prey (Invasibility)
Habitation sites that impact immigration.
Species adaptation to these places.
Resource availability.
As islands are rich in natural resources as islands are surrounded by waters on all sides thus remain isolated for long term periods.
12% of the worlds population lives in North America.
The right answer for the question that is being asked and shown above is that: "b. 2,314." The land area of the United States can be divided into more than b. 2,314 watersheds. The total land area of the United States is very big.
It is know as Rhythmic layering
