风云仔仔
幼苗
共回答了15个问题采纳率:93.3% 举报
not really
1 the population is growing but we have not find a better way to feed them
2 for the growing population we have got the space problem,meanwhile we do not have enough space to grow food to feed them.
3 for so many earth become sand ,more and more earth are not suit to grow crops
1年前
1