It would be the first option. Adenine and thymine.
No. Ionic bonds form when atoms with opposite charges bond with one another. Atoms develop charges by gaining or losing electrons. For a given element, the atoms will (usually) have a tendency to gain OR lose a particular number of electrons, so they can only form ions of a particular charge that is either positive or negative.
Answer:
Complete or incomplete?
Complete metamorphosis occurs in wasps, ants, and fleas while incomplete metamorphosis occurs in termites, praying mantis, and cockroaches.
Wasps: egg, larva, pupa, and adult
Cockroaches: egg, nymph (immature), and adult
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--Applepi101
