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by rainwater harvesting
Of course. It is done naturally that way.
Harvesting is still often accomplished through manual means, although mechanical techniques are increasingly being used.
Many companies have but I believe BMW has done most.
Rain water is free, so if you use rain water you are not depleting the water supply in the dams. This means that fewer resources will be required to build more dams or water reserves. Rainwater tanks can be plumbed into your toilet cisterns and even as cold water for your clothes washing machine. Some places give rebates to subsidize tank installation. Check with your local authority and Water Board.For collecting water.The survival of humans and animals.Using the collected water.
If you done commerce you can go IT field
As rainwater falls to earth, it absorbs pollution (natural and industrial) in the atmosphere which turns the rainwater slightly acidic. Limestone is affected by the acidity, and weathering and erosion is the result. The more pollution, the stronger the acidity, and the more damage is done to buildings and statues made from limestone.
Rain water harvesting should be done at the drought occurring areas.
Guava Trees should be pruned from October right after done harvesting.
A radish, when grown as a salad food crop, has a lifespan of less than a year, from seed sowing to harvesting. Harvesting, in the home garden, is done over a period, as and when the radishes are needed to be added to the family's Summer salad.
When most of the land was covered by jungle, rain water used to get absorbed in the soil and percolated in the deeper strata of soil and soil used to act as a sponge. First absorbing the rains and then slowly releasing the water through out the year. So even small rivers used to flow through out the year after monsoon. With heavy cutting of trees, witch used to hold soil, all soil washed through floods. Now, when there is rain fall, we have flood and next day, we do not have water. Now as there are jungles of cement, we have only one option and that is rooftop rainwater harvesting. In witch, we will collect the rain water, through slope in the rooftop and get the rains in a tank made on the ground, through witch it will percolate in the ground. This will increase the level of underground water if done by all in the city.