Scientists want to investigate whether the increased concentration of carbon dioxide in the ocean affects fish survival. Scientists suspect immature fish larvae may be most affected by increased carbon dioxide concentrations. Which of the following best identifies a testable hypothesis for the investigation?
A)The decreasing temperature of the ocean water will increase the survivorship of fish larvae.
B) There will be a greater percentage of fish larvae that survive than mature fish that survive.
C) The increasing carbon dioxide concentrations will increase the density of adult fish skeletons.
D) The decreasing pH of the ocean water will decrease the survivorship of fish.

The statement 'decreasing pH of the ocean water will decrease the survivorship of fish' is a testable hypothesis for the investigation (Option D).

What is a hypothesis?

A hypothesis is a given explanation of a scientific question that emerged by observing the natural world.

A scientific hypothesis must be testable, which means that it should be tested by experimental and/or observations procedures.

A scientific hypothesis can be either confirmed or rejected by testing procedure.

In conclusion, the statement 'decreasing pH of the ocean water will decrease the survivorship of fish' is a testable hypothesis for the investigation (Option D).

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