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Pesticides. J.W. C.V. Biology SB1-01. Pesticide – The Breakdown. Pest. Cide. 1. Killer: bactericide. 2. Act of killing: ecocide.

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pesticides

Pesticides

J.W.

C.V.

Biology SB1-01

pesticide the breakdown
Pesticide – The Breakdown

Pest

Cide

1. Killer: bactericide.

2. Act of killing: ecocide.

Cide : A suffix that means "a killer of." It is used to form the names of chemicals that kill a specified organism, such as pesticide, a chemical that kills pests

1. An annoying person or thing; a nuisance.

2. An injurious plant or animal, especially one harmful to humans.

3. A deadly epidemic disease; a pestilence.

the problem
The Problem

Pesticides are a toxic chemical that has more

harmful affects then positive affects on

human heath and environmental vitality

what are pesticides
What Are Pesticides?
  • It’s a poison designed to kill a variety of plants and animals such as insects, weeds, and mold or fungus
  • It’s Function is to target specific organisms
  • Includes active ingredients and inactive ingredients that are toxic
how do pesticides reach us
How do Pesticides reach us?
  • Through the skin
  • Swallowed or inhaled
  • When applied, they float around in the air and rest on ponds, laundry, toys, pools and furniture

Quick Fact:Only 5 percent of pesticides reach targeted weeds, the rest runs off into water or into the air where it can drift from 12 feet to 14.5 miles away

movement of pesticides
Movement of Pesticides

Retention

The pesticide is absorbed by the soil

Transformation

The pesticides chemical structure changes

There are three main transformation processes

Photochemical processes

Chemical processes

Microbial processes

3. Transport

Pesticide is transported most commonly by mass flow and diffusion

4. Plant Uptake

The process of pesticide being taken into the plant, where it now resides inside the plants internal structure

who is most likely to be effected
Who is most likely to be effected?
  • Children, infants and fetuses

- children have more rapid breathing

- metabolic rates

- greater surface to body mass ratios

- thinner skins

- spend more time in contact with the ground

- more frequently place their fingers in their mouths

Quick Fact:Children whose homes and gardens are treated with pesticides have 6.5 times greater risk of leukemia than children living in untreated environments.

who else is affected
Who Else Is Affected?
  • Adults

- especially those with asthma, lupus erythematosus, vacuities, dermatitis and chemical sensitivities

  • Animals

- pets, wildlife of all kinds and their habitat

besides sensitivity and toxicity what other health risks are there
Besides sensitivity and toxicity, what other health risks are there?

Main risks for adults

Main risks for children

cancer: leukemia and brain cancer

asthma and allergies

polyneuritis with numbness and pain in lower limbs.

birth defects

gangrene (tissue death) of the extremities

  • increased risk of leukemia
  • cancers (lung, brain, testicular, lymphoma)
  • increase in spontaneous abortions
  • greater genetic damage
  • decreased fertility
  • liver damage
  • disturbances to immune systems (asthma/ allergies)
  • increases in stillbirths
  • decreased sperm counts
how are animals and wildlife affected
How are animals and wildlife affected?

Known affects

Animals may develop

cancer

abnormal thyroid function

decreased fertility

decreased hatching success

demasculinization and feminization of males

alteration of immune function

  • developmental and behavioral effects in various animal species
  • reproductive disruptions.
  • cancer in dogs
  • increased number of abnormal sperm in exposed farmers.
  • decreased fertility in male rats
  • birds die after eating granular pesticides
solutions
Solutions
  • Non-toxic chemical-free lawn care
  • Indoor and outdoor Bio-Tool kits
  • Crop rotation
  • Companion planting
references
References

Rea, William J., 1996, Pesticides. Journal of Nutritional and Environmental Medicine 6, 55-124.

Lowengart, et al., 1987, Journal of National Cancer Institute, 79: 39-46.

Eagles Eye, World Wildlife Fund Publication. Summer 1995.

Irwin, J. Pesticides, Are They Silent Killers? Family Practise July 20,1991

Journal of the American Medical Association 1989;30:1306. Mayo Clinic;Medical Toxicology 1988;3:350-75. National Poisons Unit, Guy's Hospital, London, England.

references continued
References Continued

Goodman and Gillman, The Pharmacological Basis of Therapeutics, 1985, Macmillian Publishing Company, New York.

Seilier J.P. 1979, Phenoxyacids as inhibitors of testicular DNA syntheses in male mice. Bull. Environ. Cont. Toxic vol. 21:89-92.

Lerda, D. & R.Rizzi, 1991, Study of reproductive function in persons occupationally exposed to 2,4-dichloraphenoyactetic acid (2,4-D) Mut. Res. 262: 47-50.

Hammond, M., 1995, Pesticide Bylaws: Why We Need Them and How to Get Them. Consultancy for Alternative Education, Quebec.

Spears T., 1995, Toronto Star April 29.