sand gets the pool dirty and the sand wiil just dissolve
Coat it with a nice layer of lubricant. Then cement, always cement.
In square close-packed layer, a molecule is in contact with four of its neighbours. Therefore, the two-dimensional coordination number of a molecule in square close-packed layer is 4.
The organelle covered by a double layer of plasma membranes is the mitochondria.
if you are think sand would be a layer yes mars is covered with red sand
Aggregate, Ordinary Portland Cement, sand, water
In Australia, a dry plain covered with closely packed stones is called a "stony plain" or "stony desert." These landscapes are characterized by a surface layer of stones that have been weathered and eroded over time, often resulting in a unique ecosystem adapted to harsh conditions. Such areas are typically found in arid regions and can be a significant feature of the Australian outback.
Australia is not completely covered.. There is ozone hole there.
The egg of Ascaris lumbricoides is covered by three layers: an outermost proteinaceous layer called the vitelline layer, a middle lipid-rich layer called the chitin layer, and an innermost proteinaceous layer called the mammillary layer.
That will depend on how thick a layer you want.
cos it is
uranus
Viper's are covered with an outer layer of scales.