(plants absorb carbon dioxide during photosynthesis), (rain falls from the atmosphere to replenish fresh water), (volcanoes erupt gases into the atmosphere) match with these. (hydrosphere) (lithosphere) (biosphere)​

answer; 4 electrons;

ok whats the question if not i cannot you i need question and need a thing to answer

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.  

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.