Why does this recent discovery about the galapagos finches prove that it’s often challenging for scientists to determine when two groups of individuals are separate species?

Because of its similarities . It is the process by which organisms are most suited to their local environment to survive.

PLATO SAMPLE ANSWER;

Individuals may look different from each other, meaning they have a wide degree of genetic variation, but they still breed and produce fertile offspring. Scientists must evaluate many different factors—genes, anatomical structures, mating seasons, and geographical location—to determine whether it is possible for two species to produce fertile offspring.

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.

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.