i believe the answer is true! :)
If a species is said to be extinct, then that species is reduced to zero. There are none living in existence. The affects to other organisms of its extinction would depend on their value to the ecosystem. Regardless, extinction completely stops evolution of the species extinct.
Allergic reactions is the answer. Pollen can trigger them in you.
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I can't see the whole image, but I would say A, since it is the only statement. B and D are steps in the experiment, and D is a question, not a statement.