Monday

March 2, 2015

March 2, 2015

Posted by **ScienceConfusion** on Saturday, November 21, 2009 at 9:10pm.

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**

science - 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...

math - 10. For questions 10-13, use the following data: 13 29 41 60 89 14 26 53...

college math - 10. For questions 10-13, use the following data: 13 29 41 60 89 ...

math - 4. For Questions 4-7, use the following data: The number of file ...

Another Math Statistical Question - Assume Coca Bottling is a company producing ...

economics - ABC Machinery produces ice machine with historical (monthly) data in...

Statistics - 1. For the following exercise, complete the following: a. Find the ...

math question - hi, i have a math question that i need help with: when data are ...

Data - Research South Carolina for data that is commonly used in health services...