The drought in American rivers reveals the footprints of dinosaurs 1 100 million years ago. How serious is the local drought?

Due to the severe high temperature and dry weather in the United States, rivers and reservoirs have dropped significantly, and the dinosaur footprints in Dinosaur Valley State Park in Texas, USA have been exposed again. The local high temperature and drought have seriously affected people's life and production. More than 50% areas in the United States have experienced different degrees of drought. Especially in Texas and California, local agriculture and animal husbandry have been seriously affected, and the water consumption of residents has also been reduced to one-fifth of the original.

The cause of the drought. The drought in the western United States has lasted for nearly a hundred years. With the intensification of human activities and the serious greenhouse effect, the severity of drought is getting more and more serious. Global warming and ocean current movement are the direct causes of drought. The western United States is mainly influenced by Alaska Warm Current and North Pacific Warm Current. With the warming of the Arctic climate and the frequent occurrence of La Nina phenomenon, the persistence of multiple warm currents began to increase, and the rainfall decreased significantly.

The effects of drought. Drought makes the soil drier and the soil is seriously short of water. Therefore, the water content of plants is gradually decreasing, and forest fires caused by high temperature weather frequently affect many parts of the United States. The smoke produced by forest fires also affects the surrounding cities, and the air quality in cities is greatly reduced. Drought has caused the water level of many reservoirs in the United States to drop, and rivers have been seriously cut off. The lack of fresh water resources has brought disastrous effects to the local area. Agriculture, animal husbandry and planting have been hit hard, and residents have serious difficulties in drinking water.

Coping with drought. Texas and California in the southern United States are the worst-hit areas. Due to the lack of enough water and food, farmers began to sell livestock in large quantities. The government has also begun to restrict residents' water use. In order to prevent the fresh water resources of the reservoir from being evaporated, the relevant departments have also put black protective balls in some reservoirs. The drought in the United States will continue in the future.