Two groups of organisms with similar characteristics may share O A a common ancestor.
B. an evolutionary history.
O C. both A and B.
O D. neither A nor B.

Which position represents spring in the southern hemisphere? a) b) c) d)

What is i fracture in the crust called when land move up, down or sideways

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?