Which of the following statements is true? A. Atoms are made of molecules.
B. Atoms can join to form molecules.
C. Atoms contain more than one element.
D. Some atoms do not have protons.

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

7. in the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated. a. infectious b. retroviral c. lysogenic d.lytic