APES – TOPIC 5.6 Pest Control Methods

Toxins that get passed up the food chain in increasing amounts

• bioaccumulation

• compaction

• compounding

• non-elimination

DDT, an insecticide, is ____________ in the environment. This means it doesn't break down/decompose. It lasts a long time.

• persistent

• synergistic

• acute

• threshold

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Which would NOT be a reason to use GM crops?

• Using GM crops can increase crop yields.
• Using GM crops can reduce use of insecticide sprays.
• Using GM crops may be able to feed more people faster.
• Using GM crops can increase pesticide resistance in pests.

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Why are pesticides used so widely?

• they taste good on our food crops

• they are effective and cheap

• they cause more insects to pollinate crops

• there is no other way to control pests

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What is a substance that reduces, prevents, repels, or eliminates insects?

• Insecticide

• Pesticide

• Herbicide

• Disinfectants

What does Bt corn make that kills bugs?

• bacteria

• poison

• bacteria

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How is Bt corn made?

• Scientists add insect repellant to the corn

• The genes of the corn are changed

• Poison is added to the corn

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Why is it called "Bt" corn

• Because it stands for "Bacteria transformation" in which the corn now has a bacteria inside of it that kills the corn borers

• Because it has a gene from Bacillus thuringiensis, a soil bacteria that produces a toxin

• Because "Bt" are the initials of the scientist that created GMO corn

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Why do many farmers prefer to use Bt corn?

• Because it is 100% effective against the corn borer insect

• Because the seeds are cheaper than regular corn seeds

• Because they no longer have to spray the crops with pesticides

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What is one reason some people are AGAINST the use of genetically modified organisms, such as Bt corn?

• We do not know the potential health effects for humans and other organism

• It helps solve world hunger

• It is harmful to farmers in the field

• It allows us to stop spraying pesticides