Gerald is fishing. He uses a bobber that floats on the surface to show him if the line is being moved, and a lure that sits below the surface to attract fish.

the correct answer is ( hypoglycemia ); good luck

explanation:

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

the answer is c. it will give up it's valence electron to the other atom.

not: both offer magnification to the atomic level.