Some deposits were observed in water preserved in Aluminium containers after two to three days. What is the reason for the formation of these deposits?

The given figure shows the two crop fields (plots A and B) have been treated by manures and chemical fertilizers respectively keeping other environmental factors same. Observe the graph and answer the following questions. What is the reason for the different patter of the two graphs?

What were the three major observations Rutherford made in the gold foil experiment?

If we observed potted explant growing horizontally on ground for some days. What will be the correct diagram given below.

Spread a piece of wet cloth in the sunlight observe after sometime where has the water in the wet cloth gone the water evaporates into the atmosphere due to the heat of the sun when we want to dry clothes quickly we wave them about or keep them under a fan does the water in wet clothes dry up only due to sunlight or due to other reasons

If three people are chosen at random, then the probability that no two of them were born on the same day of the week is

Read the passage People started trapping, posoning and killing sparrow s in large numbers.Several free fire zones were set up for shooting the sparrows. People would beat drums to scare the birds from landing, so the sparrow ere forced to keep glying until they dropped dead from fatigue. Sparrow nests were torn down, egges were broken and nesttling were killed .Non material rewardsand recoginition were offered to school, work uits and gvernment agencies in accrdance with the number of sparrows killed . Later some scientists who cut open the digestive system of deal sparrows found that three- fourth of the contents were of insects harmful for crops adn ony one fourth contained grains. The scientiffic findings showed that sparrow were basically beneficial birds for humans. Rather than being increased, crop yields after the campaign were substantially decreased. What is the reason for less yield in the fields ?