Darwin noticed the beak of finches on each Galapagos Island were slightly different and matched the food found on each island. They were all different than the finch beaks on the nearby South American coast. All around the world we see slight variations of organisms based on their
environment. This evidence for evolution is called
biogeography.
embryology.
fossils.
Anatomy.
molecular

the  frequency of a wave represents  the number of wavelengths that pass a specific point per second. the unit for  frequency  is hertz (hz).

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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.

the fossil record provides evidence of a common ancestor to many species.