Some bivalves copy this organism_ and use jet propulsion to "swim".
A. cephalopod
B. whales
C. nudibranchs
D. crustaceans

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

Which of these is not a nucleotide base found in dna?

50 points! which of the following is an inference? a burning candle is extinguished when it is covered with a jar. the candle burns longer than expected in a jar that has a plant in it. a plant lives longer than expected in a jar that has a burning candle. there is more oxygen in the jar because there is a plant in it.