e22.    What do we eat?

Of the more than 30,000 types of plants on the planet, we eat only 30.  Just 15 plants and 8 animal species supply 90% of our food.  

g16.    What is matter?

g17.    Is some matter more useful than other matter?

g18.    What is energy?

m01.    How much public land is there and how is it used?

m06.    How can rangelands be responsibly managed?

m11.    What is the aesthetic and recreational importance of organisms?

m15.    How are freshwater and marine environments managed?

m18.  To whom are rainforests important?

m23.    What is energy efficiency?

m33.    How does global warming affect climate?

m34.    How could food production affect the environment?

m35.    How can global warming affect biodiversity?

m39.    How does ozone affect life?

m42.    Are there other methods for controlling pests?

m45.    Why are there proponents of pesticides?

m50.    What other types of pollutants are there?

m69.    How can risk factors for cancer be analyzed?

m74.    How is soil important in the environment? 

m75.    How can soil be conserved? 

m76.    What contaminates soil? 

m77.    How is water used? 

m78.    How do droughts and floods impact populations? 

m79.    Where are our water supplies? 

m80.    How can we protect our water supplies? 

m81.    How can we increase our water supplies? 

m82.    How can we conserve our water supplies?  

m83.    How do we produce food? 

m84.    What do we need to feed the world? 

m85.    How can food production be increased?

m86.    How can water help feed us?