D because if the species was to be removed from an ecosystem, everything that needed that species as food, or the species ould have to adapt to the foods available in the new ecosystem they live in. Hope I helped, and let me know if you are still not 100% sure about the answer, and I'll try to clarify what I said.
Sorry im not sure how this is gonna go but its worth a shot: without much genetic variation, organisms end up being more prone to diseases and deformities, not only with the body and its structure but also the way it thinks and acts (and if a living being, the IQ is likely to drop) making the generations less healthy and more prone to diseases and have a lower immunity and defence systems.
Answer:
Lizards / Reptiles
(Scientific four-legged snake is: Tetrapodophis)
Explanation:
couldn't add answer ^^ ignore comment :-)
Volcano eruptions, hurricanes, and forest fires are all examples of natural disturbances which can lead to succession.
Answer:
Newer premixed insulins are better at lowering hemoglobin A1c and postprandial glucose levels than are long-acting insulins