One reason scientists are trying to develop fuel sources from corn and sugar is because

Which group of chordates does  notpossess true backbones?                 a.  birds      b.  frogs and toads      c.  lampreys      d.  crocodilians

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry