Posted by **ScienceConfusion** on Sunday, November 22, 2009 at 2:24pm.

HELP PLEASE!!! ESPECIALLY PART 2

2. The following questions do not require the data above. Answer with the data given in each question.

i. There is a total of approximately 12.4 billion acres of agricultural land (cropland, rangeland, irrigated land) on the major continents. Given that the average Net Primary Productivity (NPP) of agricultural land is approximately 2900 kcal m-2 y-1 calculate the annual global NPP associated with these lands (your answer should be reported in SI units, i.e. Joules) [2 marks]

ii. Assume that animals (humans and domesticated animals) have a 10% energy conversion efficiency and that we need approximately 2800 kcal d-1 to survive. How many i) Human Vegetarians and ii) Human Omnivores could the planet presently support (for simplicity assume that 50% of the energy content of the omnivore diet comes from meat or meat products). Comment on the implication of this calculation. [4 marks]

## Answer this Question

## Related Questions

- math - HELP PLEASE!!! ESPECIALLY PART 2 2. The following questions do not ...
- Statistics - 2. Any given data set consists of a set of numerical values. Please...
- Another Math Statistical Question - Assume Coca Bottling is a company producing ...
- economics (4) - Assume that the following data describe the condition of the ...
- Economics (4) - Assume that the following data describe the condition of the ...
- economics (4) - Assume that the following data describe the condition of the ...
- MATH/ SCIENCE-HELP - 1) There is a total of approximately 12.4 billion acres of ...
- Science - A chemist notes that a solution turns blue when a chemical reaction ...
- mathhhhh - 1) There is a total of approximately 12.4 billion acres of ...
- science project - I'm filling out forms for my freshmen science fair project and...