If my letter guessing is right i would go with A or the first one
Answer:
Answer is A
Explanation:
Urea consists of carbon, nitrogen and oxygen. You can find it in urine, sweat, blood and milk in mammals. In its most concentrated form, it is urine. Urea is a crystalline compound, and the nitrogen content is always at least 46 percent when dry.
Answer:
it's Dd (probably)
thenks and mark me brainliestt :))
