What galaxy has arm winding outward from inner regions

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

When analyzing tree rings, what do scientists assume a thin ring indicates?

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