Answer:
Mass number
Explanation:
Isotopes have the same number of protons and electrons but different no. Of neutrons. As mass number = protons +neutrons.
Mass number should differ.
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Answer:
Coal.
Explanation:
Steam power plant has the lowest efficiency in electricity production which can only be run with the use of fossil fuels such as coal. The efficiency of this power plant is the lowest because large amount of coal is converted into smoke and other gases and very less amount of coal into heat energy. This coal is used to produce heat energy which can be used in the heating of water to produce steam. This steam is used to move turbines which turn mechanical energy into electric energy.
C
Hot springs are heated by the geothermal heat- heat from the Earths interior.
<span>Despite the important organs in the human and animal body, its behavior is still not clearly defined. <span>Traumatic
accidents, burning, orthopedics and cosmetic products rarely require
further study of human skin that needs to observe actual skin behavior
in certain conditions.</span></span>