The Likelihood of Polluting Groundwater with Pesticides and Plant Nutrients

question 27

Multiple Choice

The likelihood of polluting groundwater with pesticides and plant nutrients is enhanced by _____.

• A)the presence of macropores in the soil
• B)light tillage of the upper centimeter or so of soil
• C)the use of tillage to control weeds
• D)the production of oats rather than wheat
• E)conventional tillage as a choice compared with conservation tillage

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Definitions:

Pheromones

Chemical signals released by an organism that influence the behavior or physiological response of other individuals of the same species.

Genetic Resistance

The ability of an organism to withstand or evade harmful environmental factors, pathogens, or pests through genetic traits.

Hormone

Chemical substances produced in the body that regulate and control the activity of certain cells or organs, essential for every function of the body.

Bloodstream

The system of blood vessels (arteries, veins, and capillaries) through which blood flows within an organism, delivering oxygen and nutrients to tissues and removing waste products.