What is meant by territoriality, and how does it limit the effects of competition in nature? What problems arise when a species is introduced from a foreign ecosystem? Why do these problems occur?...

What is meant by territoriality, and how does it limit the effects of competition in nature? What problems arise when a species is introduced from a foreign ecosystem? Why do these problems occur? What are selective pressures, and how do they relate to natural selection? Describe several types of adaptations a species might have that would allow it to survive in a dry environment, escape predation, or lower competition with another species.