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12 Cards in this Set
- Front
- Back
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Potable Water |
Water that is safe for drinking |
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Primary Water Treatment |
When the water flows through settling tanks or clarifiers and the contaminants are physically removed. Lighter material, like grease and oil, settle at the top and the heavier sludge settles at the bottom. This process removes about 60% of suspended solids from the wastewater that comes through. |
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Secondary Water Treatment |
Which is when wastewater is aerated, allowing bacteria to break down organic pollutants. This process is highly effective, as it removes about 90% of suspended solids from the water. |
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Tertiary Water Treatment |
Wastewater is disinfected with chlorine or ultraviolet light before being released back into the environment. Once water has been disinfected, it's usually piped back into rivers, lakes and oceans |
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Reclaimed |
When it is reused for purposes that don't require purified water, such as watering golf courses, agricultural irrigation |
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Narrow Spectrum Pesticides |
Pesticides that have a small coverage range They are designed to kill or manage a select group of organisms. Many narrow-spectrum pesticides are designed to interact with a characteristic of the pest that is specific to that organism, such as a pheromone, hormone or physical feature. An Example: the chitin inhibiting pesticide will only harm insects that have chitin in their exoskeletons and will not affect other insects. |
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Broad-Spectrum Pesticides |
Are designed to kill or manage a wide variety of organisms. Broad-spectrum pesticides are used when many different species of organisms are causing harm or when the specific organism causing harm is unknown. An Example: methyl bromide, which is designed to control pests ranging from small insects and pathogens to larger weeds and rodents. Although broad-spectrum pesticides can be effective because they can eliminate all possible pests, they can also have undesired effects. When using broad-spectrum pesticides, the chemical can harm both pests and non-pest organisms -- pollinators |
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Bioaccumulation |
When a substance builds up in the body because the body does not have the proper mechanisms to remove it Due to the fact that the pesticides are integrated into the tissue of an organism, when it is consumed by a predator, the pesticides are transferred. As the predator consumes more exposed individuals, the concentration of pesticides in their own body will increase. |
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Biological Magnification |
Is when chemicals increase in concentration with each level of the food chain. Due to the fact that the pesticides are integrated into the tissue of an organism, when it is consumed by a predator, the pesticides are transferred. As the predator consumes more exposed individuals, the concentration of pesticides in their own body will increase. |
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Genetic Resistance |
Is when a species' genetic makeup changes over generations and results in the species becoming resistant to something that used to cause it harm. |
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Glyphosate |
Is a very popular type of herbicide that's made by the biotech company Monsanto and sold commercially as Roundup. It prevents plants from producing certain essential amino acids, and without those amino acids, the affected plants usually die. In order to work, glyphosate must be absorbed by the leaves of a plant, so it usually must be applied repeatedly over a growing season as new weeds sprout. |
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ESPS |
An enzyme in plants called EPSPS that is important in amino acid synthesis |
