Answer:
Warmth energy, likewise called warm energy, is the energy an item has in view of the development of its particles, and warmth can be moved starting with one article then onto the next article. Warmth energy on Earth comes from the sun
Explanation:
Answer:
I believe it is D.
Explanation:
Ecological succession has to do with how the habitat changes over time. So D would make the most sense.
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.