Scientists developed a theory to explain ionic bonding before they developed a theory to explain covalent bonding. what aspect of covalent bonds most likely prompted scientists to find a new theory of bonding? select one: a. covalent bonds do not involve metals. b. covalent bonds do not form crystals. c. covalent bonds involve valence electrons. d. covalent bonds do not involve atoms with opposite charges.

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

Explain that newton first law,second law and third law of motion?

How does a noncompetitive inhibitor reduce an enzyme’s activity?