Biogeochemical Cycles Quiz

What is the image representing?

• water cycle

• nitrogen cycle

• carbon cycle

• oxygen cycle

What is the name of the process in which nitrogen gas from the air is changed into nitrogen compounds plants can use?

• Nitrogen respiration

• Nitrogen transpiration

• Nitrogen decomposition

• Nitrogen fixation

What is the main source of nitrogen compounds for animals in the nitrogen cycle?

• Decomposers

• Nitrogen in air

• Bacteria in soil and plant roots

• Plants

Which process releases oxygen back to the environment as a waste product?

• Transpiration

• Photosynthesis

• Decomposition

• Respiration

What is the main element needed to build the DNA of living things?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

What is the continuous movement of water between the surface of Earth and the troposphere known as?

• Water cycle

• Ecological succession

• Nitrogen cycle

• Carbon dioxide-oxygen cycle

Which organisms obtain energy by breaking down the wastes or remains of other living things into smaller molecules?

• Plants

• Animals

• Fungi and some bacteria

• Algae

What is the process in which water vapor changes into liquid water?

• Transpiration

• Condensation

• Evaporation

• Precipitation

What is the process in which water or a form of ice falls from the atmosphere to Earth’s surface?

• Evaporation

• Condensation

• Transpiration

• Precipitation

What is the name of the process in which liquid water changes into invisible water vapor from the leaves of plants?

• Transpiration

• Precipitation

• Evaporation

• Condensation