Concise !!! 60-70 words
phrases or sentences in each paragraph
Underline or circle the key inPfoarrma.a1tio: nFeeding the world’s population is a big challenge, and it is about to get bigger. Right now, a little more than 7.3 billion people share the planet. By 2050, some scientists estimate, the world’s population may reach 9 billion. However, the changing climate will probably make feeding this far greater number a very frightening task. That is the conclusion reached by some
Para. 2: Just three crops—wheat, rice and corn—provide more than two-thirds of the calories that people consume. Such crops, and a small number of other important crops, come from farming regions sometimes referred to as “breadbaskets”. However, these areas often occupy a relatively small portion(部分) of the globe. Worse still, the breadbaskets are easily affected by bad weather. Events such as widespread flooding or extended heat wave can kill crops. That’s especially true if the bad weather occurs when a crop is young, fruiting or approaching harvest.