Natural selection<span> is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. </span>Results of these processes is the survival and reproduction of organisms which is best suited for their current environment. Hope this answers the question.
This statement is true.
Chitin is a polysaccharide made up of N - acetylglucosamine .
Fungi cell walls are made of chitin. Chitin is also the major ingredient of the exoskeletons of crustaceans and arthropods. Spiders, beetles, butterflies, lobsters, shrimps and crabs all have chitin in their protective armor.
when intermixed with protein and other pigments, it forms different levels of hardness and a variety of distinct colors. Alone, chitin appears translucent and not hard. In arthropods, it is secreted by epidermal cells.
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Explanation: Abiotic is nonliving and biotic is living so I would say the boat the house anabiotic would be the fish the man the tree the grass the bird and yea.
A good index fossil is one with four characteristics: it is distinctive, widespread, abundant, and limited in geologic time. Because most fossil-bearing rocks formed in the ocean, the major index fossils are marine organisms
