Intro to Environmental Science 6-9
questions and answers with solutions 2025
Which of the following presents the lowest lifetime risk of death to people in the US? - ANSWER
poisonous snakes
The USDA estimates ______ percent of conventionally grown foods are contaminated with
pesticide residue. - ANSWER 73
Wind erosion is most likely to cause problems in - ANSWER open, arid regions.
What are two common diseases that result from protein deficiencies? - ANSWER marasmus and
kwashiorkor
Based on what you know of risk assessment, which of the following factors would not explain
the seemingly irrational behavior of a father who smokes (high risk factor for baby) throwing
away his baby's teething rings that may contain phthalates (seemingly low risk factor for baby). -
ANSWER People recognize the risk of man-made objects but not those of natural (tobacco)
objects.
Sustainable farming - ANSWER is cheaper and safer than conventional farming.
Most of the excessive carbon dioxide that is expected to cause global warming is generated by -
ANSWER burning of fossil fuels and production of cement and clearing of forests only.
The change in ocean temperatures brought on by climate change could lead to an extreme cold
period in Europe due to a change in the - ANSWER thermohaline circulation.
Methods of managing topography include all but which of the following? - ANSWER deep tilling
, Hazardous substances ______________ while toxins are ______________. - ANSWER are
dangerous substances; poisonous substances
_________ can be defined as the transfer of genes for desirable traits, such as pest resistance,
into crop plants from other organisms - ANSWER genetic engineering
Infectious diseases such as diarrhea are closely linked to - ANSWER malnutrition.
Most people do their own personal risk assessments based upon - ANSWER personal biases and
preferences as well as logic.
A more sustainable form of managing grasslands is - ANSWER rotational grazing.
The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism
is defined as - ANSWER Bioaccumulation
________________ stated that signatory nations must reduce emissions of greenhouse gases
below 1990 levels by 2012. - ANSWER Kyoto Protocol
The World Health Organization regards health as primarily a matter of ________ well being. -
ANSWER physical, mental, and social
Historically, which of the following considerations in setting standards for toxic exposure has
been emphasized the least? - ANSWER Information about how toxins affect natural ecological
systems.
An LD50 (lethal dose 50%) is a dose of a toxic chemical that - ANSWER kills half of the
population.
questions and answers with solutions 2025
Which of the following presents the lowest lifetime risk of death to people in the US? - ANSWER
poisonous snakes
The USDA estimates ______ percent of conventionally grown foods are contaminated with
pesticide residue. - ANSWER 73
Wind erosion is most likely to cause problems in - ANSWER open, arid regions.
What are two common diseases that result from protein deficiencies? - ANSWER marasmus and
kwashiorkor
Based on what you know of risk assessment, which of the following factors would not explain
the seemingly irrational behavior of a father who smokes (high risk factor for baby) throwing
away his baby's teething rings that may contain phthalates (seemingly low risk factor for baby). -
ANSWER People recognize the risk of man-made objects but not those of natural (tobacco)
objects.
Sustainable farming - ANSWER is cheaper and safer than conventional farming.
Most of the excessive carbon dioxide that is expected to cause global warming is generated by -
ANSWER burning of fossil fuels and production of cement and clearing of forests only.
The change in ocean temperatures brought on by climate change could lead to an extreme cold
period in Europe due to a change in the - ANSWER thermohaline circulation.
Methods of managing topography include all but which of the following? - ANSWER deep tilling
, Hazardous substances ______________ while toxins are ______________. - ANSWER are
dangerous substances; poisonous substances
_________ can be defined as the transfer of genes for desirable traits, such as pest resistance,
into crop plants from other organisms - ANSWER genetic engineering
Infectious diseases such as diarrhea are closely linked to - ANSWER malnutrition.
Most people do their own personal risk assessments based upon - ANSWER personal biases and
preferences as well as logic.
A more sustainable form of managing grasslands is - ANSWER rotational grazing.
The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism
is defined as - ANSWER Bioaccumulation
________________ stated that signatory nations must reduce emissions of greenhouse gases
below 1990 levels by 2012. - ANSWER Kyoto Protocol
The World Health Organization regards health as primarily a matter of ________ well being. -
ANSWER physical, mental, and social
Historically, which of the following considerations in setting standards for toxic exposure has
been emphasized the least? - ANSWER Information about how toxins affect natural ecological
systems.
An LD50 (lethal dose 50%) is a dose of a toxic chemical that - ANSWER kills half of the
population.
