Discuss the concepts of habitat, niche, and the competitive exclusion principle.? Then using sites of your choice, identify, specifically name, and briefly describe at least four organisms

1.  Discuss the concepts of habitat, niche, and the competitive exclusion principle.  Then using sites of your choice, identify, specifically name, and briefly describe at least four organisms that have invaded the United States from other countries, found an unoccupied niche, and become established.  Be sure to identify your sources. 

2.  List and explain each of the three types of symbiotic relationships discussed in your book.  Identify specific examples of each.  

3.   Discuss the first and second laws of thermodynamics.  Then using water as an  example, discuss the three states of matter and the specific causes of the changed between the states. 

4.  You have owned and lived on a 200 acre tract of land of which about 50 aces is swampy wetland bordered  by timber you planted and plan to sell for financial support.  The EPA steps in and informs you that an endangered orchid has been discovered in your wetland and that you may not harvest the timber or cultivate any other part of your land due to runoff even though you and the orchid have been co-existing for years.  Is this an overreach by the federal government or a reasonable decree?  If situations like this really occur, cite an example or two.  Is this a reasonable position for the government to take to preserve a species?