The cubic metre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: m3) or cubic meter (American spelling) is the SI derived unit of volume. It is the volume of a cube with edges one metre in length. An alternative name, which allowed a different usage with metric prefixes, was the stère, still sometimes used for dry measure, for instance, with wood . Another alternative name, not widely used any more, is the kilolitre.
An order of magnitude is a scale of numbers with a fixed ratio, often rounded to the nearest ten.
For example: The United States has the world's highest incarceration rate. It has an order of magnitude more imprisoned human beings per 100,000 population than Norway.
The International System of Units (SI) specifies a set of seven base units from which all other SI units of measurement are derived.
Each of these other units (SI derived units) is either dimensionless or can be expressed as a product of (positive or negative, but usually integral) powers of one or more of the base units. For example, the SI derived unit of area is the square metre (m2), and the SI derived unit of density is the kilogram per cubic metre (kg/m3 or kg m-3). The degree Celsius (see the table below) has a somewhat unclear status, and is arguably an exception to this rule.
A disaster is a natural or man-made (or technological) hazard resulting in an event of substantial extent causing significant physical damage or destruction, loss of life, or drastic change to the environment. A disaster can be ostensively defined as any tragic event stemming from events such as earthquakes, floods, catastrophic accidents, fires, or explosions. It is a phenomenon that can cause damage to life and property and destroy the economic, social and cultural life of people.
In contemporary academia, disasters are seen as the consequence of inappropriately managed risk. These risks are the product of a combination of both hazard/s and vulnerability. Hazards that strike in areas with low vulnerability will never become disasters, as is the case in uninhabited regions.