Final Exam Review

Which of the following is nonrenewable energy?

• Wind

• fossil fuels

• Solar

• Biomass

How are fossils fuels created?

• The suns energy

• Dead organisms and plants that are buried for millions of years.

• They are made by humans

• In a scientific lab

Why is burning fossil fuels bad for the environment? (disadvantage)

• It destroys the ozone layer

• creates better weather conditions

• It adds harmful mercury to waterways

• Too much carbon dioxide from burning fossil fuels lead to global warming

What is a renewable resource?

• A resource you can reuse over and over

• An object you cannot replace

• Fossil fuels

• A resource that can only be used once

Gas that makes up 78% of our atmosphere.

• Oxygen

• Nitrogen

• Hydrogen

• Carbon Dioxide

How does the nitrogen return to the environment from an animal

• Through photosynthesis.

• Through eating.

• Decomposition when the animal dies

• Through transpiration.

The process called nitrogen fixation is essential for life on Earth. Which of the following is an example of nitrogen fixation?

• Fertilizer takes in nitrogen from the atmosphere

• Humans take in nitrogen directly from the air through cellular respiration

• The ocean absorbs carbon in the hydrosphere

• Bacteria live on the roots and convert nitrogen gas into a form that plants can use

What would happen if an excessive use of fertilizer from a cropland caused too much nitrogen in the waterways?

• It can cause fish growth and helps the pond ecosystem

• It can cause algae growth in waterways and kill aquatic organisms

• It can create soil erosion

• It can contribute to primary succession

How do animals get carbon?

• By eating plants and or other animals.

• They absorb it from the atmosphere.

• From the ground

• They do not get carbon from anywhere.

How do animals ADD carbon dioxide to the atmosphere?

• through breathing / cellular respiration

• though evaporation

• through photosynthesis

• through transpiration