Speciation, which leads to diversity among species through natural selection, occurs when
a
once similar species are no longer able to mate and produce fertile offspring.
b
species experience change within their lineage and develop new characteristics.
c
species interact with other species in an ecosystem and develop similar traits to each other.
d
organisms develop characteristics that mimics traits of a completely different species.
a
once similar species are no longer able to mate and produce fertile offspring.