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


Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

Long term exposure to waves can cause sunburns and skin cancer.

Amap's orientation is typically determined by an