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 

As energy moves from one trophic level to another, about ______ is lost as heat. 

Which is a component of cell theory? 

 A(n) _____ is a possible explanation for what is observed that is based on some previous knowledge, can be tested, and shown to be false. 

Water is very cool and it has many interesting properties. Which of the following is NOT a property of water?

The pH scale is a range from 

If you discovered a new species of bottom dwelling rockfish in a fisherman’s net, you could assume it was from the