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.
Hie there!
➡️If you have swine flu (H1N1 flu), you can give it to others.✔️
➡️Stay home for at least 24 hours after your fever is gone.✔️
➡️Wash your hands thoroughly and frequently. ✔️
➡️Use soap and water, or if they're unavailable, use an alcohol-based hand sanitizer.✔️
There you go!! The Pheno type is 100% white male and Genotype is 100% Wb
The brain sends a message to get rid of the waste? sorry if wrong
