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Origins of heat and cold adaptations can be explained by climatic adaptation. [16] [17] Ambient air temperature affects how much energy investment the human body must make. The temperature that requires the least amount of energy investment is 21 °C (70 °F). [5] [disputed – discuss] The body controls its temperature through the hypothalamus.
There are many different ways to measure temperature. Typically, a thermometer can be used to measure environmental temperature. However, high humidity, or the amount of water that has evaporated into the air in the form of water vapor, can often make the temperature outside feel hotter than the measured temperature. [24]
The climate can have various impacts on mental health. For example, increased temperature can be linked to a worsening of a variety of mental health issues such as aggression, anxiety, dementia, mood, and suicide. [13] [14] The worsening of these symptoms can lead to increases in crime rates and hospital admissions rates during heat waves.
A cold shock is when bacteria undergo a significant reduction in temperature, likely due to their environment dropping in temperature. To constitute as a cold shock the temperature reduction needs to be both significant, for example dropping from 37 °C to 20 °C, and it needs to happen over a short period of time, traditionally in under 24 ...
Areas where annual temperature and weather extremes vary greatly can give insight into the climate adaptability of organisms that live there. [8] Tropical or arctic microclimates, for example, would be ideal settings for experimentation, as annual temperature and weather can vary greatly.
The brain can be deprived of oxygen with as little as 4.4 pounds of pressure and can cause loss of consciousness in just ten seconds. When hypoxia begins, permanent brain damage can occur within ...
As the latest report from the United Nations Intergovernmental Panel on Climate Change makes clear, while the planet has so far seen an average temperature rise of 1.2 degrees Celsius and will ...
Temperature gradients, thermal expansion or contraction and thermal shocks are things that can lead to thermal stress. This type of stress is highly dependent on the thermal expansion coefficient which varies from material to material. In general, the greater the temperature change, the higher the level of stress that can occur.