Aoases
Bsand dunes
Cmirages
Dsalt flats
Answer:
A. oases
Read Explanation:
Water
World Water Day - 22nd of March.
World Watershed Day - 2nd February.
Earth is also known as the watery planet. It is called so because three-fourth of the earth's surface is covered with water.
As 71 percent of the earth's surface is covered with water, it appears to be a pale blue sphere when viewed from space.
Ice floats on water due to the decrease in density on freezing. This is why water is seen below the frozen surface of water bodies.
Earth is the only living planet in the solar system. It is believed that life originated in water.
It is inferred that in the solar system, water in liquid form exists only on the earth. Since 2/3 of the earth is covered by water, when you look at the earth from outer space it looks like a blue ball. The earth is also called the blue planet and the watery planet.
The theme for World Water Day 2024 was "Water for Peace".
We celebrate March 22 as World Water Day every year
Sources of water can be classified as surface water and ground water. Oceans, rivers, lakes and backwaters are the sources of fresh water. Wells, ponds, tube wells etc. Are the sources of ground water.
The surface of the water-rich part beneath the ground is known as 'water table'. The water stored beneath the ground is the 'underground water'
Places where fresh water is available in the desert are called oases. Settlements in the desert are centered around the oases.
Water that percolates through the top soil will be collected in the pore spaces of the soil and gaps in the rocks. Such storage spaces are called aquifers. The water which we draw from wells is from such sources.
Filter point wells - shallow tube wells dug in sandy regions.
Artesian wells - The availability of water is due to the entry of water at some point to the permeable rock layer