Bose Einstein condensation occur at temperature very close to absolute zero i.e 273.15 degrees centigrade.. Under such conditions, large quantity of Boson occupies the lowest quantum state, at which point microscopic quantum phenomena becomes apparent macroscopically. A BEC is formed by cooling a gas of extremely low density about one hundred thousandth the density of normal air, to ultra low temperature.
Most fertilizers are rich in nitrogen and phosphorous because they have to replenish nitrogen and phosphorous in the soil, which are essential for plant growth. If they didn't have this, the soil would have to wait fro another cycle and this would hinder plant growth. The correct answer is C.
First you need to convert kiloJoules to Joules
1 kJ is 1000 J
1500kJ *1000J == 1500000 J
Then 1500000J * 1Cal/4.18 J == 358851.6746 calories