Many scientists contend that the earth is the only real example of a sustainable system. What are the three major natural factors have played the key roles in the long-term sustainability of life on this planet? How can you apply each to your life?
What will be an ideal response?
The three scientific principles of sustainability are:Dependence on solar energyBiodiversityChemical cycling?Application answers will vary.
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Large raindrops fall __________ than smaller raindrops, and have a __________ terminal
velocity than small raindrops. a. faster, lesser b. faster, greater c. slower, lesser d. slower, greater
Why do waves expend so much energy on a rocky headland?
A) Waves reflect off the headland and amplify the incoming waves. B) Wave velocity is greater on headlands than on beaches. C) Waves refract toward the headland on both sides. D) Headlands tend to have deeper water surrounding them, so the waves are higher.
The residence time refers to the average length of time that a drop of water remains
A. in motion without being "stuck" in a store. B. intact before the hydrogen and oxygen atoms split. C. unpolluted by human activities. D. in its store.
Changes in the orientation of Earth's axis over a 26,000-year cycle is known as
A) eccentricity. B) obliquity. C) precession. D) inclination.