Export your concept map and attach the file to this assignment. Answer the following questions:

1.An ecosystem needs continuous inputs of energy in order for its organisms to survive. In most ecosystems, this energy comes from sunlight. Which organisms in an ecosystem capture the energy from sunlight? How do they transform the energy so that other organisms in the ecosystem can use it? Why is the energy that enters an ecosystem eventually used up?
2.There is approximately 2,000 cubic kilometers of water stored in rivers around the world. Using the terms water cycle, flux and pool, describe under what conditions removing 1000 cubic kilometers per year from rivers for human use could be sustainable.
3.Each year, around a quarter of the carbon dioxide found in the atmosphere is turned into plant matter via photosynthesis. Does this mean that, in the absence of human activity, all carbon dioxide would be removed from the atmosphere in around four years? Explain your answer.
4.If one million kilocalories of energy are stored in producers in an ecosystem, how many kilocalories can be transferred to tertiary consumers in the ecosystem? Show the calculations that support your answer.
5.Assume an ecologist is studying interactions among different species in an ecosystem. What level of organization should the ecologist study? Why?

6. Four of the most important processes that occur on planet earth are the carbon, phosphorus, nitrogen, and hydrologic cycles. Your assignment is to discuss how phosphorus cycle affects our daily lives, and what type of activities we are doing that are impacting and affecting these natural cycles.