This is because the earth isn't a star and instead a planet.<span>For fusion to occur on Earth, you need a temperature </span><span> of at least 100 million degrees Celsius—six times hotter than the core of the sun. Currently, here on Earth the amount of energy you'd need to put in to produce that kind of heat or pressure is much, much higher than what you get out in usable energy.</span>
<span>Atoms vs. Ions. Atoms are neutral; they contain the same number of protons as electrons. By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion.</span>
Answer:
O begins to boil
Explanation:
When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid suddenly begins to boil.
- At this point the boiling point of the liquid has been reached.
- Further addition of heat energy will cause the liquid to boil vigorously
- Subsequently evaporation will start from the surface of the boiling liquid.
- The atmospheric pressure is the ambient pressure measured with the respect to the sea level pressure.
Answer:
A longitudinal study is a observational study that follows the same subjects repeatedly over a period of time, in some cases from birth to death
or
the same adults are tested at each time point: 20, 30, and 40 years of age
