1. Ionic bonds form between atoms that lose or gain electrons and get a. same charges
c. opposite charges.
b. the same charge.
d. neutral charges.
2.The bond formed when two atoms share a pair of electrons is called a(n)
a. hydrogen bond.
c. covalent bond.
b. ionic bond.
d. water bond.
3.Polar molecules have
a. no negative or positive poles.
c. only a negative pole.
b. both negative and positive poles. d. only a positive pole.
4.When placed in the same container, oil and water do not mix because
a. they are both polar.
c. they are both nonpolar.
b. water is polar and oil is nonpolar. d. water is nonpolar and oil is polar.
5.Due to the polarity of water, compounds that dissolve best in water contain
a. nonpolar bonds.
C. polar bonds.
b. ionic bonds.
d. Both (b) and (c)

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

a and c are the answeres