nobody really knows yet. there is differences in brain activity. heredity may play a role. it is known though, that generally, they are missing one or more of three neurotransmitters. One is serotonin. Another is dopamine. The last is norepinephrine.
food additives sugar
not enough ingredients, or need to add oil
People who add designs to there fashion or mix up what they were like I do
sometimes anxiety old add or other disorders can. sometimes its tourettes
Osteopetrosis is the result of a genetic defect that causes the body to add new bone more rapidly than existing bone disintegrates.
A force, or several forces that don't add up to zero, acting on the object.
Intoxication and inexperienced. Add stupid and that may cover 90% of the accidents.
When you add yeast, the yeast "eat" some of the carbohydrates and grow and reproduce while releasing carbon dioxide, which causes the dough to rise.
cheap gasoline,try a higher octane gas or add an octane booster to your tank
the density in the water causes it to float when you add more salt and less water.Just like the dead sea
Power Steering fluid is probably low.....mine was low and add some to it no more whining!
Pressure test the convertor. Perhaps others can add.