1. Which rock sample had the most porosity? Which sample had the least?
2. How much empty space was there in the medium-sized rock sample?
3. How much time did it take the water to flow through the gravel? The sand? What about the dirt?
4. Which sample is the most permeable

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

answer; i believe the correct answer is (replication is not conservative);