The process in which nitrogen is converted into a usable form for life is called
a.
nitrogen fixation
b.
photosynthesis
c.
greenhouse effect
d.
photolysis

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.