However, this diversity is somewhat illusory, as most agricultural soils have volcanic rock or ash substrates, and most important soils are slightly to severely acid.
(this diversity; is; somewhat illusory; T:as most agricultural soils have volcanic rock or ash substrates) (most agricultural soils; have; volcanic rock or ash substrates) (most important soils; are; slightly)
this diversity most agricultural soils most important soils
is have are
somewhat illusory T:as most agricultural soils have volcanic rock or ash substrates
volcanic rock or ash substrates
slightly