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

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.

bal is blood alcohol level. bac will normally be higher in a person with more body fat. so the answer to your question would be, as body fat decreases, the increasing rate of bal decreases.