The aanswer to the top question is D. Animals would lose their homes and soil would wash away. The answer to the bottom question is B coal because that takes millions of years to form
Answer:
The answer is 13.7076271
Round that however you need.
Answer: Valves in the veins
Explanation: The flow of the blood inside the body takes place through the veins and arteries. The oxygenated blood from the heart is supplied to the different parts of the body.
The blood flows from the capillaries to the venules and from there to the veins. The blood moves in the veins by the rhythmic movement of the smooth muscles in the body.
Most of the blood moves against the gravity so there is a chance that it can backflow so to prevent this there are valves in the veins known as one way valves.
Metabolic Pathway is the correct answer.
