A farmer and a housewife may have never studied biology, yet both of them know some of its general principles through experience. State any two principles which they know.
A farmer , as he is experienced in his field of agriculture , he might have more knowledge about how to increase crop yield.
He might also know how to prevent pest attacks on crops.
Also , he might also know the various methods of irrigation.
The Housewife , would know which crop grows nicely and gives good yield.
Also , she knows which crop needs more care.She will also have knowledge about the nutritional values of the crops