Carbon & Water

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

During photosynthesis, carbon is moved from which reservoir to which reservoir?

• From the atmosphere to the terrestrial biosphere.
• From the troposphere to the terrestrial biosphere.
• From the lithosphere to the terrestrial biosphere.
• From the hydrosphere to the terrestrial biosphere

How does carbon in a grass plant get into a lion?

• The lion eats an antelope that ate the grass

• Carbon from grass doesn't end up in a lion.

• The lion absorbs the carbon given off by transpiration

• The lion breathes in carbon given out by the plant

Which of the following add carbon dioxide to the atmosphere?

• volcanoes
• combustion of fossil fuels
• animal and plant respiration
• all of these

features of environment that are alive or were once alive

• biotic

• abiotic

• inbiotic

• biography

How nitrogen is "fixed" into useable form for plants

• only through action of bacteria
• only through lightning
• through action of bacteria & lightning
• through photosynthesis

TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.

• True
• False

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere
• lower levels of nitrogen in the atmosphere
• higher levels of carbon dioxide and other greenhouse gases in the atmosphere
• higher levels of oxygen in the atmosphere

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus