The world population is expected to grow to almost 10 billion by almost 2050. with 3 billion more mouths to feed, and the growing desire of the middle class for meat and dairy in developing countries, global demand for food could increase by between 59 and 98 percent. This means that agriculture around the world needs to step up production and increase the production of the yields. But scientists say that impacts of climate change -higher temp, extreme whether decreasing the quantity of food supply.
Weather extremes
Eighty percent of the world crops are rainfed, so most farmers depend on the predictable weather agriculture has adapted to in order to produce their crops. However, climate change is alternating rainfall patterns around the world.
When temperatures rise,the warmer air holds more moisture and can make precipitation more intense.which is becoming more common can directly damage crops, resulting in decreased yields.
This is happening in major food-producing regions such as the India, USA, Iran Iraq.
Rising temperatures
Global warming may benefit certain crops, such as potatoes in India and rice in West Africa, and enable some farmers to grow new crops that only thrive in warmer areas today.
The ultimate effects of rising heat depend on each crop's optimal range of temperature for growth and reproduction. If temperature exceed this range, yields will drop because heat stress can disrupt a plant's pollination, flowering, root development, and growth stages.