When only synthetic fertilizers are used on a crop, the quantity used needs to be increased over time because ________.
A)they are washed away by seasonal rains, but residual fertilizers remain
B)organisms in the soil develop a resistance to these fertilizers
C)more and more genetically engineered crops are being planted
D)synthetic fertilizers provide no organic bulk

Question

Quizplus · Accepted Answer

Synthetic fertilizers provide nutrients but do not improve soil structure or organic matter, leading to soil degradation over time, which requires increasing amounts of fertilizer to maintain crop yields.

When Only Synthetic Fertilizers Are Used on a Crop, the Quantity