Gases in Earth's atmosphere absorb about 90 percent of this heat and radiate it back to the surface, which is warmed to a life-supporting average of 59 F (15 C). This very helpful process is called the greenhouse effect.
Anything that interrupts the normal connections between nerve cells in the brain can cause a seizure; this includes a high fever, low blood sugar, alcohol or drug withdrawal, or a brain concussion. Under these circumstances, anyone can have one or more seizures.
Generalized Seizures. 1  Tonic-Clonic (Grand-Mal) Seizure â This seizure causes you to lose consciousness and often collapse. Your body becomes stiff during what's called the tonic phase. During the clonic phase, muscle contractions cause your body to jerk. Your jaws clamp shut and you may bite your tongue.