DDT Study guides, Class notes & Summaries
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NRES 100 exam 2 Questions With Complete Solutions
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Biomagnification correct answer: Biological concentration; The tendency for some substances to concentrate with each trophic level. 
 
- toxic substances become increasingly concentrated within living organisms as they move up each step of the food chain. 
 
Point Source correct answer: Sources of pollution such as smokestacks, pipes, or accidental spills that are readily identified and stationary 
 
Non-Point source correct answer: These are diffuse sources of pollution such as urban runoff ...
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CIH Flashcards Questions and Answers 100% Verified 2023
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CIH Flashcards Questions and Answers 100% Verified 2023 
Organochlorides 
Chlorinated hydrocarbons DDT, Chlorodane, Aldrin, Kepone 
Stored in body fat, non-polar, lipid soluble 
Hepatotoxic, nephrotoxic, neurotoxic 
 
 
 
Aliphatic Hydrocarbons 
Opposite of aromatics (no benzene, open chain) 
Gases C1-C4, Liquids C5-C16, Solids >C16 
 
 
 
Halogenated Hydrocarbons 
Carbon Tetrachloride - potent hepatotoxin, 
Methylene Chloride - metabolizes into CO 
 
 
 
Cotton Dust 
Causes Byssiosis or brow...
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Contemporary Issues in Biology Final ~ TCU, Sawey Exam Questions and Answers
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Contemporary Issues in Biology Final ~ TCU, 
Sawey Exam Questions and Answers 
how long have homo-sapiens been on earth - Answer- thought to be 200,000 years, 
starting in ethiopia 
mutation - Answer- change in nucleotide in the base of DNA; not all harmful; passed 
down in generations of that descent 
when did humans establish themselves worldwide - Answer- 12,000 years ago; before 
humans and agriculture coincided 
how did humans live before agriculture - Answer- used tools (needles, spears, c...
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public health pest control exam
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Mosquito Control in Florida in 20th century 
tourism rocketed after control of salt marsh mosquitoes, prior to this S. penninsular part 
of FL = unhabituale, orange county = mosquito county 
first organized mosquito effort in FL" WW1 joint effort between US army and US public 
health service @ camp johnson near jacksonville, 1919 city of Perry 
in the 30s and 40s 1500 miles of drainage ditches dug to drain mosquito breeding 
habitats, Burea of malaria Control created wtihin Division of Health, ...
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Pest Control Exam Correct Questions & Answers(GRADED A)
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Pest - ANSWER an undesirable organism that injures 
humans, desirable plants and animals, 
manufactured products, or natural 
substances. 
 
pathogens - ANSWER disease-causing organisms, such as 
viruses, bacteria, or fungi 
 
Pesticide resistance - ANSWER When pests adapt and become resistant to a pesticide. First seen in resistance to DDT in 1947 
 
bioaccumulation - ANSWER The accumulation of pesticide in the fatty tissue of some animals 
 
biomagnification - ANSWER The Food chain. 
Organ...
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ENVS 1126 Test 3 (Louisiana state university)
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Question 1 
Correct 
1.00 points out of 1.00 
Flag question 
Question text 
The Industrial Revolution has led to an increased reliance 
on fossil fuels to 
a. 
power farm machinery. 
b. 
produce irrigation pumps. 
c. 
power farm machinery and to produce fertilizers and pesticides. 
d. 
develop new types of crops. 
Feedback 
Your answer is correct. 
The correct answer is: 
power farm machinery and to produce fertilizers and pesticides. 
Question 2 
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AEST Ag Associates Review 3 Exam Questions And Answers!!
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By the year 2025, the world population is projected to be? - 8 billion 
The acronym USDA stands for the government agency known as? - United States Department of 
Agriculture 
What is the meaning of the Greek word bios? - life 
The Greek word logy means? - study 
Organic food is a term used for foods that have been grown? - without use of chemical pesticides 
Which terms refers to all the conditions, circumstances, and influences surrounding and affecting an 
organism or group of organisms? - en...
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AG ASSOCIATES CERTIFICATION (Units 1-11) Standards 1, 3a, 4, 8, and 9 | 115 Questions with 100% Correct Answers | Verified | Latest Update 2024
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T/F- Agriscience refers to the application of high technology to agriculture - True 
Which of the following terms means "life" or "living"? - Bio 
T/F- Wildlife, trees, and fish are examples of renewable natural resources. - True 
T/F Intensive farming practices will likely play a big role in preserving our forests. - True 
T/F Potatoes that have been genetically modified to resist the Colorado potato beetle unfortunately 
produce a chemical that also produce a chemical that also affects hum...
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Pest Control Exam Questions and Answers Rated A+
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Pest Control Exam Questions and Answers Rated A+ Pest an undesirable organism that injures humans, desirable plants and animals, manufactured products, or natural substances. 
pathogens disease-causing organisms, such as viruses, bacteria, or fungi 
Pesticide resistance When pests adapt and become resistant to a pesticide. First seen in resistance to DDT in 1947 
bioaccumulation The accumulation of pesticide in the fatty tissue of some animals 
biomagnification The Food chain. Organisms with pes...
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Contemporary Issues in Biology TCU (Hale) Exam Questions and Answers
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Contemporary Issues in Biology TCU 
(Hale) Exam Questions and Answers 
Plague - Answer- Broke out in the 1300s and killed 75 million people by the early 19th 
century. Fleas were spreading the plague. Modern antibiotics are effective against 
plague, but if an infected person is to treated promptly, the disease is likely to cause 
illness or death. 
Fleas spread plague by? - Answer- feeding on blood of mammals like rats, spreading 
the bacteria that causes plague. 
Malaria - Answer- One of the m...
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