Well C or A would work because both are polite so yeah
Valves ensure blood flows toward your heart. Vein valves work to bring the blood that flowed down via arteries back up to your heart.
Answer: True
Explanation: DNA is a feature people have, as well as characters. You may look like your mother or father... But your features is what makes you look a certain way.
This may not be much help, but I tried!!!
B. plastic , the recycling of plastic would conserve fossil fuels