North Carolina ranks second in production of Christmas trees in the United States. Scientists in North Carolina use living cells and their enzymes to create industrially useful products from the trees, like ethanol to fuel cars. All BUT ONE of these statements is an advantage of this biotechnology.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

answer; both surfaces of the membrane are nonpermeable