Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
Did you know?
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
Did you know?
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
Did you know?
Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
The endosymbiosis theory
Different ways to depict phylogenetic relationships
Possible relationships between fossil and living primates.
International Economics: Theory and Policy (10th Edition)
Psychodynamic Theory
The four identity statuses proposed by Marcia, based on Erikson's theory