(a(i))[3]
Calculate the percentage change in the mean body mass from the red junglefowl to the chicken. Express your answer to three significant figures.
(a(ii))[2]
Suggest reasons why farmers have selectively bred chickens to reach maturity faster than red junglefowl.
(a(iii))[3]
Describe how a farmer could breed chickens with a larger body mass.
(b)[6]
Explain how the use of chicken faeces near freshwater lakes can lead to habitat destruction.
(c)[3]
Explain how urea is made in humans.