2the atmost recensionin ne bodo predsienten
2. the atmosphere traps warmth like a blanket, this keeps the earth's
moderate which allows for humans to exist.
oxygen levels
temperature
carbon dioxide levels
none of the above

It will fall off and tip over. 

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.