Staying warm has a positive impact on an animal 's survival.
Everyone needs to conserve some energy to stay warm.
Conserving energy has a positive impact on an animal's survival.
Conserving energy has a positive effect on what?
Options:
[a] Doing what you like
[b] Increasing global temperatures
[c] Animal survival
[d] important habitats
[e] animals with backbones
[f] most organisms
[g] Profits for oil companies
[h] Most plants