- Study guides, Class notes & Summaries

pesticide-resistant insects would - Answer have evolved more slowly of the pesticides were used in just a few regions the sharp decrease in atmospheric 14C in the past decade is directly related to - Answer increased used of in fossil fuels blood lead levels in children between 1996 and 2012 have - Answer continued to decreases as exposure to lead has reduced much of the increasing global need for electricity can be met by solar sources because - Answer about 70% of electric...

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8 pages

Written in 2026/2027

Grade A+

TestSolver9

Four major considerations regarding pesticide use are: - Answer Health considerations, psychological considerations, environmental considerations, moral considerations Health considerations: - Answer Unsafe exposures through misuse, or dietary or occupational exposure can lead to death or adverse effects Psychological considerations: - Answer People have diverse opinions on the safety of pesticides; comes down to perception that naturally occurring chemicals are safer than synthet...

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4 pages

Written in 2026/2027

Grade A+

TestSolver9

According to the CLI for agriculture how many classes of land exist in Canada - Answer 7 agriculture is considered to have originated first in - Answer fertile crescent Neolithic revolution occurred approx 100,000 years ago - Answer false is food calorie bigger or smaller than energy calorie - Answer bigger what has decreased in canada over the last 100 years - Answer number of farms does primary sector include food produced in backyard home gardens - Answer true...

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8 pages

Written in 2026/2027

Grade A+

TestSolver9

Agrobiodiversity - Answer includes the diversity of plants, practices, and knowledge that farmers manage and use within their farms and in the broader landscape. Fortress Conservation - Answer consists of the enclosure of commonly held natural resources through the creation of reserves, parks, and other bounded areas for conservation and toursim-related activities, to the exclusion of local users from these areas. Ecotourism - Answer is composed of income generating activities gea...

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9 pages

Written in 2026/2027

Grade A+

TestSolver9

Which is an example of a density-dependent factor? A. the effects of disease and predators on a single species within a community B. the increase in the number of species in an ecosystem C. the effects of a drought on a single species within a community D. the effects of rainfall on a terrestrial biome E. the effects of a major winter snow and ice storm on an entire ecosystem - Answer A. the effects of disease and predators on a single species within a community Whic...

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96 pages

Written in 2026/2027

Grade A+

TestSolver9

Name and briefly describe the risk and benefit of each of the four major considerations regarding pesticide use. - Answer Health considerations: Human health can be impacted by the use of pesticides. While pesticide use can benefit people through improved food availability and control of disease vectors unsafe exposures through misuse, or dietary or occupational exposure can lead to death or other adverse health effects. Psychological considerations: People have diverse opinions on the safet...

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6 pages

Written in 2026/2027

Grade A+

TestSolver9

DDT - Answer -first used in 19__ - first used to control lice, mos_____, and stop spread of typ_____, mala_____, yellow fev_____ - health and environmental impacts apparent by 19__. because: ... major pesticide considerations - Answer -4 major areas - physical hea_______ - psychological well_____ - envi_________ impact - moral princ______ 1/4 perspective = Consumers - Answer Benefit from pesticides because: -food avail_____, secu______, afford___ -reduced spread of letha...

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9 pages

Written in 2026/2027

Grade A+

TestSolver9

Who is Barry commoner? - Answer He was a leading ecologist and among the founders of the modern environmental movement. Father of ecology The closing circle and 4 laws of ecology - Answer four laws of ecology: Everything is connected to everything else. There is one ecosphere for all living organisms and what affects one, affects all. Everything must go somewhere. There is no "waste" in nature and there is no "away" to which things can be thrown. Nature knows best. Hum...

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6 pages

Written in 2026/2027

Grade A+

TestSolver9

Fumigants - Answer - volatile liquids or solids packaged for release as gas - toxic to pests and applicator; penetrates organic material well Aerosols (A) - Answer - low active ingredient w/ one or more solvents in pressurized can or container - safe & ready to use; more expensive - e.g. roach control Emulsifiable concentrates (EC) - Answer - a solution suspended in another; when mixed with water, solution becomes suspended in water & turns milky white - easy to handle, tra...

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10 pages

Written in 2026/2027

Grade A+

TestSolver9

Pesticides - Answer DDT, neonicotinoid, glyphosate (non-selective) and atrazine Pesticides - Answer substances, products or organisms intended to kill, control or prevent pests. Pests - Answer Living organisms that are present in places or in large enough numbers to cause them to be unwanted, a nuisance or damaging to plants, humans or other animals and include insects, rodents, fish and weeds. Types of pesticides - Answer - Synthetic (conventional), for example glyphosate, ...

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12 pages

Written in 2026/2027

Grade A+

TestSolver9

Which property of a pesticide would make it more likely to move in surface water runoff? - Answer High solubility. Which statement about movement of pesticides from the application site is true? - Answer Runoff and erosion are sources surface water contamination by pesticides. Which is an example of non point-source contamination of groundwater? - Answer Pesticides that dissolve and leach through soil after it rains. Under which conditions are pesticides more likely to leach th...

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1 pages

Written in 2026/2027

Grade A+

TestSolver9