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a layer of ozone gas which occurs naturally in the upper atmosphere, and protects life by...
a lobe-shaped orbital in which electrons may move. There are 3 p orbitals per energy level from...
an artificial device that helps to stimulate and regulate the heart muscle.
the area around the Pacific Ocean that is at the edge of several tectonic plates
the container is designed so that it can be used for more than one purpose, for example, juice...
the product is opened and then used right away, with the packaging being disposed of, for...
products are packed into appropriate quantities for the retailer, for example, a six-pack of...