Many drugs can be applied to the skin without entering the blood. how is this fact explained?

Which of the following are energy solutions that release pollution into the air>

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Identify the examples in which sam interacts only with natural resources