Biome and Ecosystem

Question 1: What is the difference between R and K selective?  Provide an example of a K specialist species and an R specialist species (find examples outside the textbook).  What kind of environment would favor each and why?

Question 2:  According to our textbook, a biotic factor is a living element found within an ecosystem, while an abiotic factor is a nonliving element found within an ecosystem.  Choose a biome and ecosystem and provide an example of a biotic and abiotic factor found within your biome/ecosystem.  Explain the importance of these factors to your specific biome/ecosystem.  

Please answer each question separately.