Which step of respiration produces the most energy for the organism

How do environmental factors influence genetic traits? a. environmental factors determine all genetic traits. b. environmental factors can determine if a genetic trait becomes a health issue. c. environmental factors are determined by genetic traits. d. environmental factors have no influence on genetic traits. select the best answer from the choices provided

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

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this