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  • Stage 1

    Answer 6 questions correctly in a row.

Naomi went for a walk outside in the snow. The weather was cold! So after her walk, she warmed up inside a restaurant with a cup of hot soup.
A woman walking outside in the snow.
A woman eating soup inside a restaurant.
Even though the temperature of the environment was very different outside than inside the restaurant, Naomi's internal body temperature stayed about the same. Her body used regulatory systems to maintain
homeostasis,
or a state of internal stability.
Most of an organism's energy goes toward maintaining homeostasis. Organisms contain systems that detect internal changes and work to keep variables like temperature, pH, and fluid levels within a narrow range. If the organism is not able to self-regulate and maintain a stable internal environment, the organism's cells—and ultimately the organism itself—may not survive.
Select the true statements.
ref_doc_title.

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