John rings a doorbell. Did John apply a force to ring the doorbell? Explain how you
know and which type of force he applied.
HELP PLEASEE

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?

How many moles are contained in 5.6 l of h2 at stp