The 4 major classes of organic biological molecules are 

A weak interaction between two polar molecules is called a 

An acid is a substance that provides extra 

The dead zones from the book/lecture are when 

A photoautotroph would use

Which one of the following is consistent with the frontier ethic?

Enzymes are _______ and can be __________ by extreme heat and extreme pH swings.

The planet is heating up because we are adding sooooo much CO2 (about 35 billion metric tons per year) to the atmosphere. CO2 is a heat trapping gas that acts like your car windshield in that sunny parking lot, heating up your car (the Earth) quite a bit. There are things we can do to prevent more CO2 emissions (like riding your bike to work/school) but we also need to add ways to remove CO2 already up there.    What is one way to reduce the amount of CO2 already in the atmosphere? 

Which of the following would NOT be characteristic of a sustainable ecosystem?

An example of kinetic energy would be