Question

question 13 (1 point)
a major problem with using surface water for irrigation is that it can be:
o a hard to find
b too cold
o c naturally salty
o d affected by drought & pollution

question 14 (1 point)
which of the following practices can help conserve water in irrigation?
o a using drip irrigation
b ignoring soil moisture levels
o c allowing fields to flood
o d spraying more pesticides

question 15 (1 point)
what does the term water quality refer to in agriculture?
o a color of the water
b the taste of water
o c waters ability to freeze
o d suitability of water for irrigation

Explanation:

Question 13

Surface water sources like rivers, lakes can be affected by drought (reducing water availability) and pollution (contaminating the water, making it unsuitable for irrigation). Surface water is relatively abundant (not hard to find in many regions), its temperature is usually not a major problem for irrigation, and surface water is not naturally salty (salty water is more associated with groundwater in some arid regions or seawater intrusion which is not the norm for surface water used in irrigation).

Drip irrigation delivers water directly to the plant roots, minimizing evaporation and runoff, thus conserving water. Ignoring soil moisture levels can lead to over - or under - watering (wasting water or not using it efficiently). Allowing fields to flood is a very water - wasteful irrigation method. Spraying more pesticides has no relation to water conservation in irrigation.

In agriculture, water quality mainly refers to how suitable the water is for irrigation (e.g., does it have the right chemical composition, is it free of contaminants that can harm plants or soil). The color and taste of water are not the main aspects considered in an agricultural irrigation context. Water's ability to freeze is not relevant to the concept of water quality for irrigation.

Answer:

d. Affected by drought & Pollution

Question 14