Corn Production Can Be Limited by Nitrogen Levels in the Soil.Some

Multiple Choice

Corn production can be limited by nitrogen levels in the soil.Some farmers reduce the need to apply ammonia to their fields by rotating corn crops with nitrogen-fixing soybean crops.Using soybeans to add nitrogen to degraded soils is an example of

A) biological augmentation.
B) reducing fertilizer runoff.
C) production efficiency.
D) plant bioremediation.
E) trophic level efficiency.