Acar has mads of 1,200kg. what is its acceleration when the engine exerts a force of 600 n (formula: f=ma)

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

Dna is always read in the whereas rna is read in .

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?