Describe the main goals of precision agriculture
What will be an ideal response?
The main goals of precision agriculture are to reduce the use of water and fertilizers in agriculture. In many areas, groundwater supplies are dwindling because of agricultural use. One solution for the overuse of groundwater is to reduce agricultural activity in areas that have insufficient rainfall or surface water supplies to sustain agricultural crops. Similarly, farmers can plant crops that require less water, and they can use drip irrigation systems that deliver water directly to the roots of their plants. Nitrogen fertilizers are energy intensive, and phosphorus fertilizer supplies are expected to dwindle in the 21st century, so farmers would want to apply fertilizers only in those areas of their fields where fertilizer is needed.
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Urban change in core regions has been influenced the most by
A) higher levels of education. B) Postmodern architectural styles. C) the economic transformation to a postindustrial economy. D) increased racial tensions. E) higher levels of spending on urban renewal by national governments.
The enforcement of the international convention for the prevention of pollution from ships (the origin of the U.S. Marine Plastic Pollution and Control Act of 1987) in international waters is implemented by ________.
A. the European Union B. the United States C. the G-8 D. the United Nations E. nobody
Even a basic examination of soil texture in the field requires sophisticated equipment
Indicate whether the statement is true or false
Which of the following is not an example of an abiotic component of an ecosystem?
A) mineral nutrients B) precipitation C) plants D) sunlight E) atmospheric gases