Atmosphere Test Review

Front

The carbon cycle is shown in the diagram above. From this information, which statement correctly describes a step in the carbon cycle?

• Photosynthesis adds carbon directly to the lithosphere.
• Plant respiration adds carbon directly to the atmosphere.
• Burning fossil fuels removes carbon directly from the biosphere.
• Animal respiration removes carbon directly from the atmosphere.

Back

Plant respiration adds carbon directly to the atmosphere.

Front

Which process is most effective in returning carbon directly back into the atmosphere?

• condensation
• decomposition
• respiration
• transpiration

Back

respiration

Front

Which of the following would most likely result in decreasing carbon dioxide levels in a lake?

• an increase in the amount of precipitation
• a decrease in competition among consumers
• an increase in the number of fish caught from the lake
• a decrease in the amount of sedimentation entering the lake

Back

an increase in the number of fish caught from the lake

Front

What term describes a process in which plants absorb carbon from the atmosphere?

Back

photosynthesis

Front

The diagram above shows the exchange of carbon on Earth. Which biological processes are represented at X and Y in the diagram?

Back

X: photosynthesis; Y: cellular respiration

Front

Which contributor transfers the greatest amount of carbon into the atmosphere while reabsorbing the least amount? Options: the ocean, changing land use, vegetation and soil, fossil fuels and industry.

Back

fossil fuels and industry

Front

Which process contributes water to an environment allowing it to maintain a suitable environment for the inhabitants? Options: evaporation, precipitation, sublimation, transpiration

Back

precipitation

Front

What is the original source of the energy that moves through the water cycle?

Back

the Sun

Front

Which statement best describes the process of evaporation in the water cycle?

Back

Water vapor forms after energy is absorbed.

Front

Which percentage of Earth’s carbon dioxide is stored in places other than in the atmosphere?

Back

60%