Sodium chloride, aka salt, constitutes 90 percent of the entire ocean’s mineral content, the same percentage of mineral content found in our blood.
---Does it say that sodium chloride constitutes up to 90 percent of the mineral content of blood?
Yes, it is a little awkwardly said, but that is what they mean.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.