Causes of Blackouts. The most common cause of a blackout is called syncope, (âsin-co-peeâ). Syncope describes blacking out because of a sudden drop in blood flow to the brain. Usually syncope is so-called âReflex Syncopeâ. This is the cause of fainting. The blackout occurs because blood pressure suddenly drops and the brain is temporarily starved of oxygen and glucose. Although a faint can cause accidental injury, it is not dangerous of itself, provided the patient can lie down flat.
Love is evergreen. Green is everywhere. Itâs the most common color in the natural world, and itâs second only to blue as the most common favorite color. Itâs the color we associate with money, the environment, and aliens, and itâs the color of revitalization and rebirth. Letâs break down our understanding about the color green.
Pink is one of the most common colors of flowers; it serves to attract the insects and birds necessary for pollination and perhaps also to deter predators. The color comes from natural pigments called anthocyanins, which also provide the pink in raspberries.