Which could be a pathway of food through an ecosystem?

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

The greatest increses in energy use occuree between which two stafes of society

How do light years astronomers to determine the ages of distant objects in space ?