The four molecules shown here are made of different combination of carbon, oxygen or hydrogen atoms. Below each molecule, list the types of atoms in it and how many atoms there are of each type. The the first is complete as an example

1. Water molecule: Composed of two atoms of hydrogen and one atom of oxygen.

2. Oxygen gas molecule: composed of two oxygen atoms.

3. Carbon (iv) gas molecule: composed of one atom of carbon and two atoms oxygen.

Methane gas molecule: composed of one atom of carbon and four atoms of hydrogen.

Explanation:

1. The first molecule is a molecule of water. It is composed of two atoms of hydrogen and one atom of oxygen. The atom of oxygen is depicted in red color while the two hydrogen atoms are red in color.

2. The second molecule is an oxygen gas molecule. It composed of two oxygen atoms.

3. The third molecule is carbon (iv) oxide. It is composed of one atom of carbon (black color) and two atoms oxygen (in red color).

4. The fourth is the methane gas molecule. It is composed of one atom of carbon (black color) and four atoms of hydrogen (white color).

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.