Generally, one milliliter of water is about 25 drops, so a drop of water is equivalent to 0.05 milliliter. If it is dripped with a common dropper, it is about 0.05 ml, and if it is dripped with a burette, it is about 0.04 ml. Because the size of a water drop is different, the amount it contains is also different, followed by different diameters, different water quality and different tension. Then the temperature of the environment is different, so the amount of liquid contained is different.

So generally speaking, a drop of liquid is about 0.05 ml. Milliliter is a unit of volume, corresponding to cubic centimeter, and the main unit of volume unit is liter (L). 1L= 1000mL, 1 ml = 1 cm3,1000ml = 1 decimeter cubic =1l.

The influence of water on climate;

Water can regulate the climate. Water vapor in the atmosphere can block 60% of the earth's radiation and protect the earth from being cooled. Ocean and land water bodies can absorb and accumulate heat in summer, so that the temperature will not be too high; In winter, it can release heat slowly, so that the temperature will not be too low. The water in the ocean and the earth's surface evaporates into the sky to form a cloud. When the water molecules in the cloud reach a certain amount, they fall into rain through precipitation and become snow in winter.

Water falling on the surface seeps into the ground to form groundwater; Groundwater emerges from the stratum again, forming spring water, which flows into the sea through streams and rivers. Form a water cycle. Precipitation activities such as rain and snow have an important impact on climate formation. In the temperate monsoon climate, the summer wind brings rich moisture, with more rain in summer and autumn and less rain in winter and spring, forming obvious dry and wet seasons. In addition, in nature, due to different climatic conditions, water will appear in the form of hail, fog, dew and frost, which will affect the climate and human activities.