Please help me answer these for ecology, I need them asap, please and thank you.

Question

Please help me answer these for ecology, I need them asap, please and thank you.

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The figure below shows the global electricity demand by sector up to 2009 and projections to 2035 by the International Energy Agency (IEA) in its World Energy Outlook report. To express the energy need of human kind we are forced to use numbers so large we cannot comprehend their meaning. To get more feeling for these numbers, we are going to calculate the average energy consumption per person. From the figure below, what is the global per capita electricity demand in 2009 in megajoules (MJ)? Assume that the world population was 7 billion (7 109) in 2009. 40000 Own use 35 000 30000 25 000 T&D; losses Other Transport Services Residential industry 20000 15 000 10 000 5000 2000 2005 2010 2015 2020 2025 2030 2035 HINT: From the figure we see that the total global electricity demand for 2009 was around 20000 TWh. The total world population is assumed to be around 7 billion. Therefore the per capita electricity 20,000 x 109(kWh) 7x 10 -2857 kWh. NEXT convert this value to megajoules (MJ)!!! Also use the previous two questions as hint. ] 102,85O MJ 11,500 MJ 10.285 MJ 1.285 MJ

Explanation / Answer

1) Convert this value to megajoules:

C) 10,285 MJ

2) By using fossil fuel what is the maximum efficiency that you can achieve from converting chemical energy to electrical energy

A) 49%

3) Which of the following statements about wind energy is not true?

D) Wind energy is a nonrenewable energy resource.

4) ............ is an example of alternative energy source:

B) Owning a solar powered home

5) Which of the following statements about geothermal energy is not true?

A) It is not a practical source of energy.

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