Which of the following BEST describes varicose veins? A. Veins cannot prevent the backflow of blood.
B. Veins lose the ability to transport blood to the heart.
C. Veins become used for transporting blood to and from the heart.
D. Veins become less efficient at transferring waste to the blood.

This is what i found on google“ the monomers combine with each other via covalent bonds to form larger molecules known as polymers. in doing so, monomers release water molecules as byproducts. this type of reaction is known as dehydration synthesis, which means “to put together while losing water. in the process, a water molecule is formed.” i hope this you