In order to keep the soil fertile, farmers often change the crop that is grown in a field every two to three years. What is this process called?
A.
sharecropping
B.
crop conservation
C.
organic farming
D.
crop rotation

Agenotype 'aa' leads to albinism in peacocks. this condition is very rarely found in nature, compared to the normal genotype, 'aa', and 'aa', as theycan be easy prey to their predators and are unable to attract mates. which types of selection forces act here? o a.directional selectionob. stabilizing selectionoc. sexual selectionresetnext© 2019 edmentum. all nights