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A type of mild traumatic brain injury resulting from a blow or hit to the head that causes the brain to move rapidly back and forth inside the skull.

A long chain of DNA molecules that contains the genetic material of an organism.

Costing very little.

A change in global or regional climate patterns, in particular a change apparent from the mid to late 20th century onwards and attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels.

A group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body.

A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane.

In epidemiology, a contagious disease can be transmitted directly from person to person by contact or close proximity.

An event that is certain to occur.

The portion of the brain in the back of the head between the cerebrum and the brain stem. The cerebellum controls balance for walking and standing, and other complex motor functions.

Circle