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2 Truths & a LIE

2 Truths & a LIE. Approximately 2-3% of the water on earth is usable to humans The United States uses about 346,000 million gallons of fresh water every day The average U.S. person uses the most water daily by flushing the toilet. 2 Truths & a LIE.

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2 Truths & a LIE

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  1. 2 Truths & a LIE • Approximately 2-3% of the water on earth is usable to humans • The United States uses about 346,000 million gallons of fresh water every day • The average U.S. person uses the most water daily by flushing the toilet

  2. 2 Truths & a LIE • Water dissolves more substances than any other liquid • Rain water has a neutral pH of 7 • Rain water can carries chemicals, minerals, and nutrients with it

  3. Laboratory Experiment: Biology II Save the stream!Acid Rain Investigation

  4. Before we begin: • 1. Find a partner- choose wisely! • 2. Devise an experimental plan • Requirements: - Must test 3 additive - No additional materials given -Plan must be approved before starting-pH meter- pg 3

  5. 3. Experimentation • Need to wear safety goggles • Data collection- pg 4 • 30 minutes! Work efficiently! • 4. Post-lab questions • Finish for homework

  6. Clean-up Procedure • 1. Throw again soil cups • 2. Dump acid rain in the sink • 3. Rise beakers • 4. Put all materials back on tray; place tray where you found them.

  7. Think-Pair-Share • What does it mean to be “acidic”, “neutral” , and “basic”? 2. How does pollution create acid rain? 3. How could acid rain damage the ecosystem? List 3 examples. 4. Is there any way to “neutralize” acid rain less acidic?!

  8. Think-Pair-Share • What does it mean to be “acidic”, “neutral” , and “basic”? 2. How does pollution create acid rain? 3. How could acid rain damage the ecosystem? List 3 examples. 4. Is there any way to “neutralize” acid rain less acidic?!

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