The larger the electronegativity value is, the stronger the attraction of electrons to an atom is. This means that in a covalent bond the atom with the higher electronegativity value will have a slightly negative charge since it pulls the electron(s) towards itself while the other atom gain a slightly positive charge since the electrons move further away from its nucleus.
Answer:
Beak shape/size or song or behavior or mechanical/chemical differences or time of mating or location on the island or primary food source differs between the Big Bird lineage and G. fortis.
Also acceptable: Description of another mechanism that prevents males and females from different populations from encountering each other/recognizing each other as potential mates.
Answer:
40,000 + 5,000 + 600 + 10 + 7
