General Science Questions

Decomposing waste in the landfills, by the action of microorganisms, produce methane and carbon dioxide. Landfill gas consists of 40-60% of methane and rest is carbon dioxide. Trace amount of volatile organic compounds (<1) are also present which mainly comprise of hydrocarbons.

From the given options, a power plant uses a nonrenewable energy source to make electricity. A power plant uses coal for making power production.

Research designed to evaluate theories is called the scientific method.

Yellow Journalism refers to a type of journalism with the use of lurid features like eye catching head lines and sensationalized news in newspaper publishing to attract readers and increase circulation. The techniques that are used in this journalism may include exaggerations of news events, scandal-mongering, or sensationalism.