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Use solar energy to reduce energy bills and for convenience. A solar cooker is handy on camping trips and RV or boat excursions, because it provides a passive option to prepare food using sunlight. A shoebox solar oven or cooker…
Most of us simply toss empty plastic bottles away without a second thought. However, learning to melt them with a toaster oven and mold them is an inexpensive hobby that will let you explore your creative side while also giving…
Biomass pyramids and energy pyramids are two types of ecological “infographics” used by scientists to represent the relationships among elements in a food chain. Scientists can use these kinds of biological pyramids to determine the health of plant and animal…
Every type of molecule consists of its own particular set of atoms. The number of atoms in a molecule, the kinds of atoms in a molecule and the arrangement of atoms in a molecule all combine to determine the the…
Just when you think you’ve got mean and mode conquered, along comes the grand mean. The grand mean is the mean of the means you have already recorded. It’s not achieved by dividing the total number of sets, but rather…
Fractions consist of sets of numbers in which the top number (numerator) illustrates a part that is related to the whole unit, which is represented by the bottom number (denominator). A ratio is very similar to a fraction, in that…
Open pit mining — or strip mining — is an extraction process for ore or fossil fuels that takes place at the surface of a mining site. Worldwide, 40 percent of mining occurs at the surface, according to Greenpeace International.…
The bobcat (Lynx rufus) is a master of adapting to a wide variety of lush as well as marginal habitats. Found in Mexico, the United States and Canada, it is at home in deserts, mountains, forests, farmland, swamps, brush land…
When examining data on a graph or reading facts and figures from a newspaper, it’s important you understand the difference between percent and percentage point. Both terms are used to describe the relationship between two sets of data. However, percent…
Commensalism is a symbiotic relationship between two organisms where one organism benefits and the other is not affected. Other types of symbiotic relationships are mutualism, where both benefit from each other, and parasitism, where one benefits and the other is…
