High levels can cause serious side effects that could be fatal.

These high levels are poisonous to the brain and can cause death.

This is caused by high levels of radiation in the blue band.

Increased levels of greenhouse gases must cause the Earth to warm in response.

Increased level of physical activity can cause an increase in erythropoiesis.

Blood levels of vitamin B12 can decrease in women who take this medicine, but the lower level usually does not cause health problems.

Low levels of exercise cause a 30 to 40 percent reduction in risk for dementia.

Sometimes, the level of pollution caused depends on the environment in which the tool is being used.

The level of fear usually is inappropriate to the situation and may cause the person to avoid common, everyday situations.

Without dither the low level may cause the least significant bit to "stick" at 0 or 1.