Two people produce the same mass of sweat during an investigation. One person is in dry air and the other is in humid air. All other conditions are kept the same.
Less sweat evaporates in the humid air.
Which statement explains the expected difference in cooling?
Cooling is greater in humid air because more sweat remains liquid.
Cooling is greater in dry air because more sweat releases energy to the skin.
Cooling is equal in both conditions because equal masses of sweat are produced.
Cooling is greater in dry air because more evaporation removes energy from the skin.
44 exam-style questions on Edexcel GCSE Biology 7.3 Homeostasis and thermoregulation, covering 7.3.1 Importance of a constant internal environment, 7.3.2 Importance of homeostasis, 7.3.3a Thermoregulation via the skin and hypothalamus, and 7.3.3b Vasoconstriction and vasodilation in thermoregulation. Each one has a worked solution and a mark scheme showing where the marks go.