20 percent.
Since one strand is 20, the opposite that would connect with it (Thymine) would have the same amount so the total would be 100.
Hope this helps!
<span>The major structure that supplies the cells with nutrients and removes their waste is the circulatory system. The circulatory system is composed of the heart, the blood vessels going from and back to the heart, and the blood that travels inside them. The blood vessels that carry nutrient and oxygen-rich blood to the cells are arteries. They become the thinner arterioles, and then the thinnest capillaries. With the exception of the pulmonary arteries, which carry non-oxygenated blood from the heart to the lungs, all arteries carry oxygenated blood. The capillaries disburse the nutrients and oxygen to the cells and pick up wastes and carbon dioxide, form into the thicker venules, then to form veins, which lead back to the heart (with the exception of the pulmonary veins, which carry oxygenated blood from the lungs to the heart). Veins also differ from arteries in that veins have valves to prevent blood from flowing backward.</span>
Throwing waste in to water, or spilling anything in the water that's not supposed to be in the water
Answer:
D. Uncontrolled Cell Division
Explanation:
Fun Fact: Cancer can make mini cancer that can stack on top of itself.
