What criteria and constraints do engineers need to consider when considering whether a former mine should be reclaimed?

One of the reasons that stars are so large is because

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

What two conditions must be present for osmosis to occur?