Beth broke her ankle bone. The doctor gives her a brochure on foods she can eat to help restore the health of her bones. Which element will help Beth strengthen the bone? OPTIONS:
carbon
phosphorus
nitrogen

Single-walled carbon nanotubes may be able to strengthen bone tissue, producing tougher and more flexible artificial bone implants.

Explanation:

protein but that's not an option

explanation:

skee yee

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

i think it is d. objects resist changes in their state of motion.