Insulin and glucagon, are both are secreted from islets of Langerhans at the pancreas<span />
<span>The food source of all Amoebas does not remain the same, but the method in which they consume their food does. This is called phagocytosis, which is a digestion method in which they surround the prey and consume it's remains. Amoeba in aquatic environments are known to eat many different types of food, including algae.</span>
A. near the boundary ocean crust and continental crust.
<span>It answers D. Mitochondrial DNA stay almost identical over species and only varies ever so slightly. By comparing mitochondrial DNA over species you are able to see how closely related they are and how long it might have taken for the species to evolve.
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