Think about what is lacking in plants in different regions, and write down how you can increase their yield.

For normal plant growth, the following factors are necessary: light, moisture (water), optimal temperature and the presence of fertile soil. Man has learned to change the conditions for growing plants. So to provide water in dry places, irrigation is carried out, in humid places, drainage (removal of excess water). In cold conditions, plants are grown in greenhouses, soil fertility is increased by the introduction of various fertilizers, with the help of chemicals, weeds and pests can be destroyed.