Which of the following best sums up the whole passage?A.Malthus' prediction has been prove
Which of the following best sums up the whole passage?
A.Malthus' prediction has been proved to be correct by modern experts.
B.Hydroponics is a new development in agriculture.
C.Hydroponics may be the answer to the world food shortage in the future.
D.Conventional methods of agriculture should be improved so as to step up food production by two percent every year.