farther the island is from the mainland, the fewer is the number of species found on the island.
Explanation:
The island biography explains the riches of the species and the factors that influence the diversification of species and thus this theory develops on the species areal relationships and was presented in 1960 by ecologist Robert H.
Answer: Usually on a map, solid lines represent boundaries between nations, or if it is a map of the states, it would represent the borders of the states.
