1. What two characteristics of air were demonstrated when we pushed in the plunger and then let it go? 2. What is air made up of? What is between them?
3. How can we smell something like a cup of coffee (or another liquid)?
4. How do liquids become odor particles in the air so that people can smell them? Does our model of gases fit other
matter-like liquids?

cramming before a final is bad because it makes a student's stress level higher. students who embrace cramming to get through a final exam week find themselves struggling to perform consistently, once the brain adjusts to prolonged sleep deprivation.

what's the

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.