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Any equation that relates the first power of x to the first power of y produces a straight line on an x-y graph. The standard form of such an equation is Ax + By + C = 0 or Ax…
The mating rituals of peafowl — the collective name for male peacocks and female peahens — are marked by flashy displays of brilliant tail feathers and discerning female partners. The peacocks use their stunning blue and green tail feathers during…
The Arctic Ocean is the smallest ocean in the world and centers on the North Pole. In the summers, there is endless daylight with a sun that doesn’t set. In the winter the sun doesn’t rise for months at a…
The term “biotic” refers to any living think within an ecosystem. Within the rainforest, which covers about two percent of the Earth’s surface but houses 50 percent of the Earth’s plants and animals, this include animals, plants, fungi and microorganisms.…
If you want to know the atomic mass of an element, you’ll find it listed under the symbol for that element in the periodic table. The units aren’t included with the mass, but they are understood to be atomic mass…
Ounces, abbreviated as oz., come in two forms — measurements of mass or volume. Mass ounces further are broken into two categories, the avoirdupois ounce, most common in the United States; and the troy ounce, often used to measure jewelry.…
Standard score is a statistics term. The standard score shows how far away from the mean a score falls. It is also known as a z-score. Using a z-score table, you can find where the score falls on the table…
Ammonia (NH3) is a gas that readily dissolves in water and behaves as a base. The ammonia equilibrium is describe with the equation NH3 + H2O = NH4(+) + OH(-). Formally, the acidity of the solution is expressed as pH.…
Animals hibernate by slowing their metabolic rates to consume less energy during seasonal periods of food scarcity and extreme cold weather. Some animals, including crickets and many other invertebrates, actually go further by entering complete dormancy. In the process called…
To calculate how much a length of steel will increase, you need to know how much the temperature increases and the original length of the steel. Like most materials, steel expands when the surrounding temperature increases. Each material has a…
