The image above shows the rise in average global temperature near the surface of Earth over the past one to two centuries. Rise in average global temperature is called global warming. The global warming is the result of an increase in magnitude of greenhouse gases such as carbon dioxide, methane, nitrous oxides, and other greenhouse gases. These gases that have been released in atmosphere by burning of fossil fuels for industry, transportation, and residential uses. These cases cause greenhouse effect, as result in global warming.
Shaping. Each step in the learning process is called an approximation. An animal may be reinforced for each successive approximation toward the final goal of the desired trained behavior. Animals learn complex behaviors through shaping.
Unlike a conventional fingerprint that occurs only on the fingertips and can be altered by surgery, a DNA fingerprint is the same for every cell, tissue, and organ of a person. It cannot be altered by any known treatment.