Let us assume that there are 2000 students in your school. Each student requires 2400 kJ of energy per day. There are 365.24 days in an year. Thus, each student will need 2400 x 365.25 kJ of energy per year. And a student population of 2000 will need:
2400 x 365.24 x 2000 kJ of energy per year
= 1.753 x 10^9 kJ/year
Rice provides us with 5200 kJ/m^2 of land. The total amount of...
Let us assume that there are 2000 students in your school. Each student requires 2400 kJ of energy per day. There are 365.24 days in an year. Thus, each student will need 2400 x 365.25 kJ of energy per year. And a student population of 2000 will need:
2400 x 365.24 x 2000 kJ of energy per year
= 1.753 x 10^9 kJ/year
Rice provides us with 5200 kJ/m^2 of land. The total amount of land required to satisfy the energy demand of the whole school is
= 1.753 x 10^9 / 5200 = 3.37 x 10^5 m^2.
In comparison, chicken provides us with only 800 kJ per m^2 of land. The total land required to support the entire school's population on chicken is
= 1.753 x 10^9 / 800 = 2.19 x 10^6 m^2
Since rice produces 6.5 (= 5200/800) times the energy per m^2 of land, it would require 6.5 times less land compared to chicken.
Hope this helps.
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