Exam 2 study guide

Biology Exam 2 Study Guide

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Energy sourcesAtmosphere and Climate ChangeHydrosphere and Water Pollution

Energy Resources

China and the United States account for over 60% of the world's coal consumption. The graph to the right (from the lecture 9 and 10 - Non-renewable Resource Power Point) shows the United States in blue at the very top and China in green below that.

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Energy Resources

Electricity from nuclear power plants is produced via the fission (breaking) of uranium atoms by bombarding them with neutrons. This releases energy that heats water to about 520 degrees F. The hot water is then used to spin turbines that are connected to generators, producing electricity.The image to the right is from the lecture 9 and 10 Non-renewable resources Power Point.

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Energy Resources

When hydrogen is burned as fuel, the primary waste product is H2O (Lecture 11 - Renewable energy resources).H2 + O2 ---> 2H20 + energyHydrogen fuel cell technology uses hydrogen and oxygen to produce an electrical current with water as a byproduct.

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Atmospheric Resources

Ecosystem services are required to re-balance natural systems that we have disturbed.

Atmospheric Resources

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Volatile Organic Compounds (VOC's):Organic chemicals that vaporise into the airAccounts for 15% of air pollution (Lecture 12 and 13 in Our Atmosphere and Atmospheric Pollution Power Point

Atmospheric Resources

Air pollution: Gases or particulates that are present in high enough concentrations to harm humans, other organisms, buildings or structures

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Global Climate Change

Cell respiration and photosynthesis are complex processes that involve the flux of carbon between the atmosphere and organisms.Lecture 14 - Global Climate Change

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Global Climate Change

Scientists use computer simulation models to forecast climate change.There is nothing in Lecture 14 that addresses this, so maybe this picture will help you remember.

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Hydrospheric Resources

Saltwater intrusion occurs in coastal regions where the water table is falling.

https://www.youtube.com/watch?v=8zxZUSVjg10 (Incorporar)