Benchmark Review

which of the animals listed below are not part of an aquatic ecosystem

• fish
• shark
• bear
• turtle

Which best explains the importance of nitrogen in the cycling of energy and matter?

• Nitrogen decreases protein production in plants.
• Nitrogen decreases the effectiveness of photosynthesis.
• Nitrogen increases protein production in plants.
• Nitrogen increases the effectiveness of photosynthesis.  

Which characteristic of an estuary makes it a good nursery area for
marine organisms?

• It is located at the mouth of a river.
• It has a mix of salt and fresh water.
• It has many areas to hide from predators.
• It has the ability to absorb water and prevent flooding.

Which is most likely an example of point source pollution?

• fertilizer sprayed onto a field
• water runoff from a city street 
• a pipe flowing into a river

We can conserve energy by simply turning off the lights when you leave the house.

• True
• False

Fossil fuels are classified as nonrenewable because they.......

• require expensive equipment
• take millions of years to replace
• can be found all over 
• provide all the energy we use

Carbon Dioxide is also known as a:

• Greenhouse Gas
• Fossil Fuel
• Sedimentary Rock
• Renewable Resource

Water stored in underground layer

• Aquifers
• Zone of Aeration
• Zone of Saturation
• Groundwater

Unit for density?

• Mass/Volume
• Meters
• kg
• Liters

Water is a ____________, which means that it can dissolve many other substances.

• solution
• solvent
• salinity
• mixture