Question

What are the advantages of algae over other sources of biofuels?

Why are some crops, like corn, not necessarily a good source of biofuels?

How can a renewable energy source have a net energy ratio less than 1? What does this mean?

Answer 1

Answer:

A significant advantage of using algae for biofuels is that it need not displace farmland used for growing food sources. The Department of Energy reports that algae have the potential to yield at least 30 times more energy than land-based crops currently used to produce biofuels.