50 POINTS!! Which characteristic is shared by all adult amphibians and reptiles?

They are covered with scales that prevent water loss.
They have hearts with multiple chambers.
They have thin skin that allows gas exchange.
They begin their lives as larvae that hatch from eggs.

In this assignment, you will analyze an example of speciation by researching the finches of the galapagos islands. then you will answer questions to construct explanations and draw conclusions based on the information you gather. someone plz !

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.