On the islands of Hawaii, approximately 800 species of fruit flies have evolved from just one ancestral species in the 8 million or so years since that ancestor arrived. The heads, forelegs, wings, and mouthparts of different species all look and function very differently. These fruit flies are found nowhere else in the world and live all over the islands, from sea-level rainforests to higher altitude meadows. How could so many species have evolved from a single ancestral fruit fly species?

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.

linnaeus is the father of taxonomy

explanation:

which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.

potentially fatal issues such as heart attacks and strokes

explanation: