abiotic and biotic factors in the tropical rain forest

In ecology, problem of this variety generally flange [at] type diversitas so that measurement of variety [done/conducted] seen the amount of certain type and what overflows relative a[n type in a[n community. Type variety a[n place [do] not only base on the amount of type which there are on the ground but also [at] specialty of types in it, is that endemic types for the habitat of certain area.