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Explore the changes that occur in ecosystems through primary and secondary succession, and learn about the water cycle and its importance in sustaining life on Earth. Test your knowledge with a pop quiz!
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I. Succession-changes that take place in a community Primary succession-colonization of new sites. New lava or rock from a volcano
Sand bar that rises from shifting sand in the ocean Land slide The 1st organisms in a community are called pioneer species Secondary Succession-changes take place after a natural disaster has taken place or a community has been disrupted by human actions
A community that changes very little is known as a Climax Community
The Water Cycle • Draw a picture of the water cycle and be sure to include the following terms: • Condensation • Precipitation • Evaporation • Transpiration • Runoff
Pop Quiz Time! • Number a sheet of paper from 1 to 7. • Write Only the answer letter. • Be sure to write your name, the date, and class period • on your paper.
1. How does energy move through most ecosystems on Earth? A. From the sun to consumers to producers B. From the sun to producers to consumers to decomposers C. From the sun to decomposers to producers to consumers D. From the sun to consumers to producers back to consumers
2. Which of the following statements indicates an understanding of the importance of energy to life on Earth? • Many organisms on Earth require energy for their life processes. • All organisms on Earth require energy for their life processes. • Energy is required for the most important life processes on Earth. • The most important organisms on Earth require energy for their life processes.
3. What role do bacteria play during the nitrogen cycle? A. Bacteria store nitrogen in wastes. B. Bacteria convert nitrogen into water. C. Bacteria turn nitrogen into phosphates. D. Bacteria transform nitrogen into molecules.
4. What is the process that breaks down food to yield energy called? F. cellular digestion G. cellular respiration H. decomposition I. photosynthesis
5. What continent has the lowest percentage of carbon dioxide output? A. Asia B. Australia C. Europe D. North America
6. What regions are responsible for the highest percentage of carbon dioxide output? F. developed regions in the western hemisphere G. developed regions in the eastern hemisphere H. developing regions in the western hemisphere I. developing regions in the eastern hemisphere
7. Which of the following shows an effect on the carbon cycle of the increased burning of fossil fuels? A. More carbonates remain in fossil fuels. B. More carbon dioxide is absorbed by organisms. C. More carbon dioxide is absorbed by the atmosphere. D. More carbohydrates remain buried deep in the ground.
1. How does energy move through most ecosystems on Earth? A. From the sun to consumers to producers B. From the sun to producers to consumers to decomposers C. From the sun to decomposers to producers to consumers D. From the sun to consumers to producers back to consumers
2. Which of the following statements indicates an understanding of the importance of energy to life on Earth? • Many organisms on Earth require energy for their life processes. • All organisms on Earth require energy for their life processes. • Energy is required for the most important life processes on Earth. • The most important organisms on Earth require energy for their life processes.
3. What role do bacteria play during the nitrogen cycle? A. Bacteria store nitrogen in wastes. B. Bacteria convert nitrogen into water. C. Bacteria turn nitrogen into phosphates. D. Bacteria transform nitrogen into molecules.
4. What is the process that breaks down food to yield energy called? F. cellular digestion G. cellular respiration H. decomposition I. photosynthesis
5. What continent has the lowest percentage of carbon dioxide output? A. Asia B. Australia C. Europe D. North America
6. What regions are responsible for the highest percentage of carbon dioxide output? F. developed regions in the western hemisphere G. developed regions in the eastern hemisphere H. developing regions in the western hemisphere I. developing regions in the eastern hemisphere
7. Which of the following shows an effect on the carbon cycle of the increased burning of fossil fuels? A. More carbonates remain in fossil fuels. B. More carbon dioxide is absorbed by organisms. C. More carbon dioxide is absorbed by the atmosphere. D. More carbohydrates remain buried deep in the ground.
