Ecology unit 1 Atmospheric nitrogen has to be combined with other elements or fixed in order to be used by plants lighting is one way that nitrogen is fixed when lighting occurs the extreme heat breaks the bonds on nitrogen molecules allowing nitrogen to combine with oxygen and form nitrogen oxides in what way is most of the nitrogen fixed by lighting made available for use by plants

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.