The following questions are to be completed for homework. I will check them tomorrow!   1.  What is an ecological niche? 2.  What are some problems that can be created when a new species is introduced into an ecosystem. 3.  What would be YOUR ecological niche?is an ecological niche? 4.  What are some problems that can be created when a new species is introduced into an ecosystem. 5.  What would be YOUR ecological niche? 6, The frog has been described as an indicator species for the health of an environment. In your own words, define the term "indicator species". 7. Why might a species be classified as endangered?