It would be B. change in color
Answer and explanation:
One negative effect that floods have on an ecosystem is that they destroy natural habitats and wildlife homes.
One positive effect that floods have on an ecosystem is that they can make fertile land a soil for plants a crops to grow.
One impact hurricanes have on an ecosystem is that they can bring unnative species from one place to another.
One impact tornados have on an ecosystem is that they can also destroy homes of native wildlife species.
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Hormones
The endocrine system includes various glands in the body that are responsible for secreting hormones into the bloodstream. Hormones are chemical substances produced by the body that regulate certain functions of cells and organs. Hormones can regulate sleep, sex, growth, stress, huger, metabolism, etc.