Anotherreport estimates that, given the high costs associated withchildhood ETS exposure, reducing parental smoking by15% could save $1 billion in direct medical costs at theprenatal and neonatal levels and into childhood.The authorsâ survey of interventions and theireffectiveness in this area is encouraging.
adjective. noun. The definition of normal is regular, natural or staying with the general standard. An example of normal is a human temperature of 98.6. Normal is defined as the usual or the average. An example of normal is the general amount of goods that a company makes each year.
For the normal to 3D curves, see FrenetâSerret formulas. A polygon and two of its normal vectors. A normal to a surface at a point is the same as a normal to the tangent plane to that surface at that point. In geometry, a normal is an object such as a line or vector that is perpendicular to a given object.For example, in the two-dimensional case, the normal line to a curve at a given point is the line perpendicular to the tangent line to the curve at the point.n geometry, a normal is an object such as a line or vector that is perpendicular to a given object.