You are surveying biodiversity on a new island chain. You have counted the number of bat species on one island already. The next island is smaller and farther from the mainland than the one you have just surveyed. According to the theory of island biogeography, the total number of its bat species should be than on the current island because the rate of immigration to the new island should be and the rate of extinction should be .

According to island biogeography, the total number of its bat species should be lower than on the current island because the rate of immigration to the new island should be less and the rate of extinction should be low.

Explanation:

The distance between old Island and new island is large so less immigration occurs which maintains the population of bat species.

Rate of immigration refers to the movement of species to other areas and colonize there, whereas rate of extinction refers to the removal of certain specie in a particular area with the passage of time. It depends on the distance between old habitat and new area. If the distance is less, the rate of immigration will be more while if the distance is large, rate of immigration will be lower which stable the population of species.

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