EXPERIMENT 1: Find the average of the four volume-change values between the

measurement times calculated in previous questions,

Add all the volume changes together and then divide by

4. Record your result for a later question

How are extrusive rocks formed? magma gets trapped inside earth and cools to rock. volcanoes apply force to solid rocks and eject them. magma gets forced to earth’s surface and cools to rock. volcanoes trap lava inside earth, where it cools to rock.

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

What does it mean for a cell membrane to be selectively permable