Ectoderm
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.
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
Its Three. Which are: Physical, Data Link and Network Layers
Australia is not completely covered.. There is ozone hole there.
They did not bathe until many layer of dirt covered their bodies
cos it is
uranus
Viper's are covered with an outer layer of scales.
It was very dry and there was many dust storms that covered the land, and etc with a think layer of dirt.
Ash