1. which of the following is a true statement? 
 a. the starting costs for tidal wave energy are expensive 
b. wave energy produce high environment impact 
c. tides are not predictable 
d. produces a lot of air pollution 

2. how can we decrease the use of fossils fuels? 
a. conserving energy and making energy more efficiently
 b. prevent people from mining and burning coal 
c. create more wind and tidal energy
 d. all of the above 

3. which of the following cannot be used to create electricity? 
a. geothermal energy
 b. solar energy 
c. wind power
 d. tidal energy


Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano

Slow down transpiration by the stomata question 9 options: a guard cells; closing b chloroplasts; closing c guard cells; opening d chloroplasts; opening