In the pre-1850 grasslands of North America there were hundreds of millions of grazing animals such as buffalo, antelope and deer. At the same time there were many fewer meat eaters, such as wolves. Explain in terms of energy flow in ecosystems and the Second law of Thermodynamics why there were so many grazers and so relatively few meat eaters. Would you expect more plants (such as grasses) tahn grazes, or fewer in the pre-1850 grasslands? Justify your response, be specific and complete.© BrainMass Inc. brainmass.com October 24, 2018, 6:06 pm ad1c9bdddf
The Second Law of Thermodynamics states that \" Energy transformation is not 100% efficient\". In the process of energy conversion, a part of high quality energy is converted to thermal energy (a low quality energy)that causes disorganizd or random motion of molecules. The high quality energy is capable of doing work, while low quality energy can not and is just dissipated in the environment.
Let us now relate this Law to the trophic structure which refers to the feeding relations of organisms within the ecosystem. We can then see the energy flow:
1. The primary ...
Physical Science: Temperature, Climate, and Renewable Resources
1. Explain how the temperature difference between the poles and the equator drives the motion of the oceans and atmosphere.
2. What are the differences between ice caps and glaciers?
3. How do ocean currents affect local climate?
4. Why do we call groundwater in most areas a "nonrenewable resource"?
5. What is the Gulf Stream?
6. What countries are directly affected by the path of the Gulf Stream?
7. Find out what kind of rock is below the soil in your town. How did you find out this information?
8. Give an example of an ecosystem near your home. Describe how energy flows through this ecosystem.
9. How many different trophic levels were represented in your last meal?
10. What is the ozone layer? Where is it located? Why is it important to life on Earth?
11. What steps would have to be taken to reduce the severity of the greenhouse effect?
12. Where do electric cars obtain their energy? Is it true they do not generate pollution because they have batteries?