Which of the following is the rigid, solid layer of the upper mantle that is connected to the crust? (3 points)
asthenosphere
atmosphere
lithosphere
mesosphere

What are two reasons for why a species might disappear from the fossil record?

What amino acid is coded for by this sequence after the mutation

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