word searches from 3/23/15 and 3/25/15
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| biennial weed | a weed that lives for two years
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| instars | a stage in the growth of insects
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| noxious weed | a weed that kills other plants
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| vector | a bacteriophage or plasmid that transfers genetic material into a cell, or from one bacterium to another.
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| nematodes | a round worm that burrows into plants and causes harm
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| insect | a bug with 6 legs and three body parts
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| chemical control | a way to control a pest with chemicals
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| metamorphosis | the transformation of a living creature in multiple life stages
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| causal agent | biological pathogen that causes a disease, such as a virus, parasite, fungus, or bacterium
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| perennial weed | a weed that lives longer than three years
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| hyphae | branching filaments that make up the mycelium of a fungus
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| diseases | an illness caused by a pathogen
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| disease triangle | basic diagram of pathology
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| bacteria | a microscopic living creature
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| annual weed | a weed that only lives for one year
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| biological control | a way to control pests with another living creature
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| pesticide resistance | when a pest species grows resistant to a type of control method
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| cultural control | manipulating the environment to eliminate or reduce pests
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| arachnid | insect with 8 legs (spiders)
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| viruses | a microscopic non-living agent of sickness and disease
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| eradication | to destroy a living creature completely
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| key pest | a pest that is very common for a species of plant
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| quarantine | isolating a plant to prevent the spread of disease or contamination
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| fungi | mushrooms, mold, mildew, etc
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| pathogens | an agent of disease
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| compound | a thing that is composed of two or more separate elements
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| signal words | words that serve to indicate, warn, direct, command,ect
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| net contents | a list of the contents or ingredients of a product
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| carcinogen | a substance that is toxic and can cause death
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| toxicity | the degree to which a substance can damage an organism
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| xylem tissue | The tissue of vascular plants that conducts water and minerals, provides support, and consists of tracheary elements and parenchyma cells
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| insecticides | a chemical used to kill insects
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| phloem tissue | The tissue of vascular plants that conducts food produced by photosynthesis to all parts of the plant and consists of sieve elements, fibers, and parenchyma
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| common name | Brand, generic, or trade name of a substance that is not a chemical name or scientific name
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| symbols | pictures that have a special meaning
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| volatilization | the process whereby a dissolved sample is vaporised
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| drift | be carried slowly by a current of air or water
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| trade name | a name by which something is known in a particular trade or profession
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| element | each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter
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| formulation | the action of creating something
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