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Answer: O made of polÿsaccharides and chitin
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Explanation: your answer is A
Answer: A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.
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Answer: A major difference between peptide and steroid hormones is the fact that peptide hormones will bind to receptors on the cells they are effecting, and induce a cascading effect. Steroid hormones on the other hand, will travel to the nucleus and have major effects.
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