Concept Quizzes

1		One of the goals of genetic engineering is to develop crops that are able to provide their own supply of nitrogen through symbiosis with Rhizobium, as do the legumes. What benefits to agriculture and the environment would be realized if cereals and other staples became nitrogen-fixing crops?
2		The human influence on the nitrogen cycle has serious environmental repercussions. What would be the effects of reducing fertilizer use to solve the environmental problems that have been created?
3		Soybeans and soy products are becoming increasingly important components of the human diet. Investigate the health benefits of using soy milk and soy-based cheeses to replace traditional dairy products. Are there any disadvantages to this practice?