&nbsp In comparison with the sweet orange, the sour orange tree is more upright and thorny and much more resistant to such unfavorable environmental conditions as frost, excess soil moisture, and neglect.
(the sour orange tree; is; more upright and thorny and much more resistant to such unfavorable environmental conditions as frost, excess soil moisture, and neglect)
the sour orange tree
is
more upright and thorny and much more resistant to such unfavorable environmental conditions as frost, excess soil moisture, and neglect