Biogeochemical Cycles

Multiple Choice

Which biogeochemical cycle is occurring above?

• Carbon cycle

• Water cycle

• Rock Cycle

Multiple Choice

What is transpiration?

• Water falling from the sky

• Water runoff into a river

• Water from the leaves of plants into the air

Multiple Choice

As a part of the water cycle, water from Earth's surface enters the clouds and finally falls back to the ground in the form of rain. What is the correct sequence of processes water undergoes?

• Evaporation, Condensation, Precipitation

• Precipitation, Condensation, Evaporation

• Condensation, Evaporation, Precipitation

• Evaporation, Precipitation, Condensation

Multiple Choice

What does NOT produce atmospheric carbon dioxide?

• Photosynthesis

• Burning Fossil Fuels

• Animal respiration

• Anything living in the ocean.

Multiple Choice

Combustion is another word for __________.

• Transportation
• Respiration
• Fossil Fuels
• Burning

Multiple Choice

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

• True
• False

Multiple Choice

The diagram shows the flow of organic molecules through an ecosystem. What two processes are identified by the labels X and Y?

• X : Respiration
  Y : Predation
• X : Adaptation
  Y : Decomposition
• X : Fermentation
  Y : Nitrogen Fixation
• X : Decomposition
  Y : Respiration

Multiple Choice

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

Multiple Choice

In the nitrogen cycle, what is the stage where "bacteria (or

lightning!) in the soil or water convert nitrogen (from the air or water) into forms

that plants can use"

• Nitrogen Fixation

• Consumption

• Nitrification

• Denitrification

Multiple Choice

In the nitrogen cycle, what is the stage where "decomposers, like

bacteria, break down dead matter, returning nitrogen to the soil"

• Nitrogen Fixation

• Ammonification

• Nitrification

• Decomposition

Multiple Select

Which two negative impacts do not relate to the nitrogen cycle?

• Fertilizer

• Combustion

• Deforestation

• Pollution