What would happen to the body if the body temperature continued to decrease during the 10th hour instead of leveling off?

If the temperature continued to decrease for the tenth hour instead of stabilizing, the body would go into hypothermia.

Explanation:

Hypothermia occurs when the core body temperature drops below 35°C, ie it is unintentional excessive heat loss. According to the graph shown in the question, hypothermia would happen if body temperature continued to decrease over the tenth hour rather than stabilize.

The core temperature of the human body should be between 36.5ºC and 37.5ºC. Below this threshold, various symptoms begin to appear, from cold to death. When there is a sudden drop in body temperature, the nerve endings detect the low temperature and immediately the body begins to perform vasoconstriction (downsizing) of the blood vessels, especially the skin, in order to decrease heat loss and stabilize the internal temperature. This is why the skin gets cold.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.