They are all made of tissue and cells.
The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
Hi Brainiac, thanks for asking a question here!
Two healthy fats that are good for you would be
saturated<span>
and trans-saturated fats. Foods like soy, canola, and sunflower oil are considered healthy fats.
Answer: Letter C </span>✅
Hope
that helps! ★ If you have further questions about this question
or need more help, feel free to comment below or post another question and send
the link to me. -UnicornFudge aka Nadia
