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Graded Assignment
Name: Ashtin Hendricks
SCI010: Environmental Science | Unit 6 | Lesson 4: Semester Test
Date: 10/18/17
Graded Assignment
Semester Test, Part 2
Answer each question, using complete sentences. When you have finished, submit this assignment to your
teacher by the due date for full credit.
(8 points)
1. Describe DDT and summarize the history of the use and banning of DDT, including actions
taken by the U.S. government. State the major reasons for spraying with DDT and for
banning it. State three or more ways science has played a role in the controversy.
Score
Answer: is a colorless, tasteless, and almost odorless crystalline organochlorine known for its use
in killing insects. It was discovered in 1874 and used for controlling malaria and typhus. It was very successful in
controlling these diseases. In 1945 it became available in the United States and was promoted as a pesticide
However, in the 1950’s the government began tightening bans on the use of DDT. There were concerns of the
effects of DDT on people and the environment In 1962 Rachel Carson wrote a book “Silent Spring” that warned
of the environmental impacts of DDT, The book claimed that DDT and other pesticides had been shown to cause
cancer and that the agricultural use was a threat to wildlife, particularly birds.
(8 points)
2. Choose one of the following resources: timber, fish, soil, water, or fossil fuels. Discuss current
problems having to do with the use and management of the resource, and approaches that
have been taken to resolve the problems.
Score
Answer:
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Graded Assignment
SCI010: Environmental Science | Unit 6 | Lesson 4: Semester Test
(7 points)
3. Identify the natural cycle that is shown in the diagram. Then, for each box in the diagram,
write one or two sentences explaining the labeled process as it relates to this cycle.
Score
Answer:
(7 points)
4. Identify an animal or plant that is in danger of extinction or that has been in danger of
extinction in the recent past. State the environmental problems that would occur if the species
became extinct. Describe the efforts that have been made to preserve the species, and any
opposition the efforts faced. Discuss how successful the efforts have been, and what
accounts for their success or failure. In describing preservation efforts, name a law, if any, that
deals with this species’ protection.
Score
Answer:
Your Score
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Copying or distributing without K12’s written consent is prohibited.
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