Climate change is affecting the chemistry of the world's oceans. In particular, the ocean water is becoming more acidic. For purple sea urchins, this poses problems as their calcium-based exoskeletons may dissolve in acidic conditions. In a certain population of purple sea urchins, some individuals possess a trait that makes their exterior more resistant to acid. If global climate change continues (as predicted) to make ocean water more acidic, how might this population of purple sea urchins evolve in response to this increased acidification? A:Purple sea urchins with a trait of having shorter, more flexible spines would become more common. B:Purple sea urchins with a trait that make their exoskeletons less resistant to dissolving in acidic water would become more common. C:Purple sea urchins with a trait that make their exoskeletons resistant to dissolving in acidic water would become more common. D:Purple sea urchins with a trait of having longer, more rigid spines would become more common.

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Physical and Chemical features

The physical property of a compound could be determined without modifying the originality of the compound. Examples of physical properties are density, hardness, color, boiling, and melting point. The chemical property expresses the ability of a compound to undergo a particular chemical change.