m41.    How can matter affect the environment?

Hydrocarbons include gasses such as methane, a gas that directly impacts the greenhouse affect. Chlorinated hydrocarbons are used in insecticides (DDT) and insulating materials (PCB); these can be taken into food chains. Chlorofluorocarbons are used as coolants for refrigeration, for aerosol propellant and as a foaming agent in plastics (CFC); these can add to the ozone problem.

e01.    What is biodiversity?

e02.   Where is life found in the water?

e17.    How do organisms use matter?

e21.    What are chemical hazards?

e23.    How is soil important to plants?

g01.    What was the second atmosphere like?

g02.    What was the primitive atmosphere like?

g03.    How did the atmosphere change after the Precambrian?

g04.    What causes climates to change?

g09.    What is the interior of the earth like?

g10.   What are earthquakes?

g11.    What is volcanism?

g12.    How are mountains built?

g16.    What is matter?

g17.    Is some matter more useful than other matter?  

g19.    Where do you find air pollution?

g20.    What is the theory of plate tectonics?

g21.   Can we mine the oceans?

g22.    What is soil?

g23.    What are some characteristics of soil?

g27.    How fast are supplies of mineral being used up?