Given a scientific question, generate a correct answer to it.

[EX Q]: Many objects have color because they contain what?
[EX A]: pigments

[EX Q]: Nonshivering thermogenesis, which involves the breakdown of brown adipose tissue, is a special methods newborns have for what purpose?
[EX A]: generating heat

[EX Q]: What basic plant structures generally have large surface areas and high surface-to-volume ratios?
[EX A]:
leaves