Match these items: a) salt / 1) a fire started without any b)sun / 2) most dangerous radiation c)plasma phase / 3) rusting d)reactants / 4) product of acid plus base e)endothermic / 5)substances united in a reaction f)hard water / 6) a reaction which takes in energy g)gamma rays / 7)contains mineral salts h)slow oxidation / 8) nuclei and free electrons i)spontaneous combustion / 9)fueled by fusion

The following is the correct list of matching:

1. A fire started without any help - Spontaneous combustion.

2. Most dangerous radiation - gamma rays.

3. Rusting - slow oxidation.

4. Product of acid and base - Salt.

5. Substances united in a reaction - reactants.

6. A reaction which takes in energy - Endothermic

7. Contains mineral salts - Hard water.

8. Nuclei and free electrons - Plasma phase.

9. Fueled by fusion - Sun.

idk

explanation:

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.