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What traits increase fitness in a particular environment?
Chalky Fossils
Fossils composed primarily of calcium carbonate making them appear white and chalk-like in texture.
White Cliffs
Natural formations made of white, chalky material, like the famous White Cliffs of Dover along the English coastline.
Diatomaceous Earth
A naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder, used in various industrial and commercial applications.
Pellicle
Structure that supports the cell membrane of some species of protists; used to maintain structure in a water environment.
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