Without backbone or having no backbone is considered as INVERTEBRATES.
hope its help...
--kcirejay:♥)
D - The organisms on the island are slightly different than those on the mainland.
The reason why this is the correct answer is because each successive generation on the mainland as well as the island both develop and continue adapting to their specific ecological niche and environment. They are, howerer, both still part of the same species.
That’d be the 2nd one from the right.
That population has the highest variety of organisms(individuals) compared to the other populations.
