Answer: D. They must eat in order to gain nutrition
Explanation:
It's just like wolves, they can get more work done if they work together.
Water. the only 4 macromolecules are nucleic acid, carbohydrate, lipids, and protein
<span>The same amount of wax exists before and after the change.
Wax when melted will be like liquid. Liquid has no definite shape, but definite volume.</span>
The second one because they can indicate infection and sickness
