More than one million years ago, a single species of finch migrated to the Galapagos from the mainland of Central or South America. From this one migrant species at least thirteen species of finch would eventually evolve. This process in which one species gives rise to multiple species that exploit different niches is called adaptive radiation. In describing the four different finch species we see here, we could also say that filling these varied niches would classify the birds as
A) generalists.
B) endemics.
C) specialists.
D) invasives.

Specialist

Explanation:

We could also refer to these finches as specialists. They are niche-specific; that is, they survive under narrow, unique circumstances. I got it wrong when i did it on usatestprep, Specialist was right.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.