Glucose is a primary source of energy for the brain, so its availability influences psychological processes.Once in the bloodstream, glucose can be used immediately for energy or stored in our bodies, to be used later. However, our bodies need insulin in order to use or store glucose for energy. Without insulin, glucose stays in the bloodstream, keeping blood sugar levels high.

A heart attack happens if the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked and the heart can't get oxygen. Most heart attacks occur as a result of coronary heart disease (CHD).

Pyria is ususally a symptom of poor dental hygiene, where the person is not brushing often, or not adequately enough leading to bacteria growth in and around thegums.

The cerebrum refers to the parts of the brain containing the cerebral cortex as well as several subcortical structures, including the hippocampus, basal ganglia, and olfactory bulb. In humans, the cerebrum is the superior-most region of the central nervous system (CNS).

The branch of agriculture that deals with the feeding, caring and breeding of domestic animals is called animal husbandry.

Darwin published On the Origin of Species with the often misquoted line 'Survival of the Fit.

Calcium oxalate is a chemical compound that forms envelope-shaped crystals, known in plants as raphides. A major constituent of human kidney stones.

Vitamin K is similar to fat-soluble vitamins the human body needs for complete synthesis of certain proteins that are required for blood coagulation and also certain proteins that the body uses to control binding of calcium in bone and other tissues.

Polio is a contagious viral illness that in its most severe form causes paralysis, difficulty breathing and sometimes death.
Plague is an infectious disease caused by the bacterium Yersinia pestis.
Tetanus, also called lockjaw, is a serious infection caused by Clostridium tetani.
Leprosy is a disease mainly caused by the bacteria Mycobacterium leprae.

Coffee is a brewed drink prepared from roasted coffee beans, which are the seeds of "berries" from the Coffee plant.