Did you know?
Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
Did you know?
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
A diversity of species live within the soils, the ecology of which remains to be explored.
Horse-human interaction
Human Body by Children
Human X- Linked Traits
Estimated times of divergence of human and Neanderthal genomic
Location of the human pineal gland