Question

2 what can be inferred from the fact that fossil fuels are carbon - based? a over time, flesh turns into carbon b most life on earth is made of carbon c trees are made of carbon, but animals are not d swampy environments are carbon - poor environments

Explanation:

• Option A: Flesh doesn't simply turn into carbon over time; fossil fuel formation is more complex than that.
• Option B: Fossil fuels come from ancient organic matter (once - living organisms). Since most life on Earth is carbon - based (carbon is a key element in biological molecules), this inference is valid.
• Option C: Both trees (plants) and animals are carbon - based as they are part of the organic life that contributes to fossil fuel formation. So this is incorrect.
• Option D: Swampy environments are where organic matter (rich in carbon) can accumulate, so they are carbon - rich, not poor.

Answer:

B. Most life on Earth is made of carbon