Using the diagram below - what is going on at points A, D, B, C And E. Be sure to include efficiency, inefficiency, specialization, growth wherever relevant in your answer.

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

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The graph shows a trend in an ecosystem over time caused by increased pollution in the region. what can you conclude from the graph? a. there’s lower biodiversity among birds. b. there’s a higher reproductive rate among birds. c. there’s a significant decline in the number of producers. d. other types of animals were unaffected by pollution.