An object moving in a gravitational field is observed to speed up. Explain why. A. The object has gained electrical potential energy.

B. The object is falling in the gravitational field, so it has gained kinetic energy.

C. The object has gained chemical potential energy

D. The object is rising in the gravitational field, so it has lost kinetic energy.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.