During the process of their normal metabolism they combine the gas with hydrogen to form a simple compound that reacts with substances in the soil to form a different compound.
(a simple compound; reacts; with substances in the soil) (they; combine; the gas; with hydrogen; to form a simple compound; T:During the process of their normal metabolism) Context(they combine,List([46, 58))):(they; combine the gas to form; a simple compound that reacts with substances in the soil)
they combine,List([46, 58))
a simple compound they they
reacts combine combine the gas to form
with substances in the soil
the gas with hydrogen to form a simple compound T:During the process of their normal metabolism
a simple compound that reacts with substances in the soil