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

[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 is the name for animals that have a backbone?
[EX A]: vertebrates

[EX Q]: Algae is a promising alternative to traditional crops for what type of fuels?
[EX A]:
biofuel