The beaks of finches found on various Galapagos Islands differed based on:

A. The size of their island.
B. The length of their wings.
С. The available food supply.
D. The predators that hunted them.

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Which method would be best to separate a mixture of sand and gravel

What is the relationship between particles in matter