( ( ( The concepts ) ( of ( density ( and ( specific gravity ) ) ) ) ) ( ( ( are ( particularly ( useful ( in ( mineral identification ) ) ) ) ) ( because ( density ( is ( ( a ( basic ( physical property ) ) ) ( of ( all matter ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS concepts)) (PP (IN of) (NP (NN density) (CC and) (JJ specific) (NN gravity)))) (VP (VBP are) (ADJP (RB particularly) (JJ useful) (PP (IN in) (NP (NN mineral) (NN identification)))) (SBAR (IN because) (S (NP (NN density)) (VP (VBZ is) (NP (NP (DT a) (JJ basic) (JJ physical) (NN property)) (PP (IN of) (NP (DT all) (NN matter)))))))) (. .)))
The concepts of density and specific gravity are particularly useful in mineral identification because density is a basic physical property of all matter.
(ROOT (S (NP (NP (NNP Density)) (PP (IN of) (NP (NN matter)))) (VP (VBZ reflects) (SBAR (WHADVP (WRB how) (RB closely)) (S (VP (VBD packed) (SBAR (S (NP (NP (DT the) (NNS particles)) (PP (IN of) (NP (NN matter)))) (VP (VBP are)))))))) (. .)))