Achain of amino acids makes up a
a. nucleotide
b. cell wall
c. protein
d. carbohydrate

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

All phases of matter may have a fixed mass

You find a fossil that you are sure shows evidence of bipedalism. you know this because which of the following anatomical traits is present? a. thighbones that angle in toward the knees b. a narrow pelvis c. opposable hallux d. posterior position of the foramen magnum