Have you ever thought about what our food will be like in the future? As the population is growing fast, there must be changes in our food.
More land will be used for building houses for people. Then there will be less space for cattle and chickens, so meat will be more expensive. Instead, people will eat more fruit and vegetables.
Scientists are always trying out new ways of growing food. Only one third of the Earth's area is land and the rest is sea, so some think maybe we can get more food from the sea.
Besides, though rice supports more than half of the world's population, it needs a lot of water to grow. Scientists predict(预测) the climate will get drier during the next century. Therefore, it might be impossible to grow rice in the future. Some farmers are experimenting with new crops. Farmers like to grow beans because they don't need much water, and beans also improve the quality of the soil. The soybean (黄豆) makes a good substitute(替代品) for rice and meat.
