🙏 Free review 2020
Required Environmental Legislation
Major Environmental Disasters
✍️ Free Response Questions (FRQs)
🏜 Unit 1: The Living World: Ecosystems
1.1Introduction to Ecosystems
1.10Energy Flow and the 10% Rule
🐠 Unit 2: The Living World: Biodiversity
2.5Natural Disruptions to Ecosystems
👪 Unit 3: Populations
3.0Unit 3 Overview: Populations
3.1Generalist and Specialist Species
3.2K-Selected r-Selected Species
🌏 Unit 4: Earth Systems and Resources
4.3Soil Composition and Properties
🏖 Unit 5: Land and Water Use
5.7Meat Control Methods
5.9Impacts of Mining
⚡️ Unit 6: Energy Resources and Consumption
6.0Unit 6 Overview: Energy Resources and Consumption
💨 Unit 7: Atmospheric Pollution
7.1Introduction to Air Pollution
7.5Indoor Air Pollutants
7.6Reduction of Air Pollutants
♻️ Unit 8: Aquatic and Terrestrial Pollution
🔥 Unit 9: Global Change
9.1Stratospheric Ozone Depletion
9.4Increases in the Greenhouse Gases
karla jauregui sandoval
May 29, 2020
Hydrogen Fuel Cells are powered by sunlight, hydrogen and oxygen. To rejoin the broken hydrogen and oxygen, a fuel cell pushes electrons through the circuit to carry energy through the circuit to the motor. Hydrogen reacts with the oxygen to produce water and also energy in the hydrogen fuel cell.
Hydrogen fuel cells come from water and are stored and used to generate electricity.
Fuel cell cars would work by using the hydrogen to power the motor and start. This is a greener alternative to gas fueled cars because hydrogen fuel celled cars only emit water vapor and heat instead of carbon monoxide and nitrogen oxides.
Diagram Courtesy to US Department of Energy
🎥 Watch: Environmental Science
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