A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).

The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).

Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.

If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.

Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.