Veins are blood vessels in humans, and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.

Explanation:

4 0

2 years ago

100% H2O<br> 40% sucrose<br> 60%H2O determine the concentration gradient

Rus_ich [418]

Answer:

200 percentage is the exact concentration

3 0

2 years ago

Your lab partner is confused about the idea of the production of seeds by plants. He reasons that the process is energetically e

alukav5142 [94]

Answer:

by seeds

Explanation:

plant more and sell them

8 0

2 years ago