Answer: Possession of Valves
Explanation: Veins possess valves which ensures that blood flows in only one direction. Valves helps blood to flow back to the heart against gravitational force.
Arteries don't have valves because the pressure originating from the heart is capable of causing the blood to flow in one direction.
Answer:
Melting ice cubes. Melting solid salts. Sublimation of dry ice into carbon dioxide gas. Evaporating liquid water.
Explanation:
D. All of the above
There would be new plants and animal life in other locations, the layout of the land varies throughout the world, and there are different climates where soils are formed.
I hope this helped
Answer:Primary succession.
