Biology, 09.12.2020 15:50 kiaraangely100400
DDT is a pesticide that has been used worldwide over the past 50 years. DDT is used to prevent insects from destroying crops and as an insecticide used to kill disease-carrying insects. In 1972, the U. S. Environmental Protection Agency (EPA) began monitoring DDT usage. They conducted studies that analyzed ice layers from existing glaciers and these studies revealed that DDT was at its highest recorded levels 10 years after it was banned from being used. Which statement best describes why environmental monitoring for DDT was performed? Group of answer choices
A. To evaluate in what ways DDT impacts an ecosystem
B. To determine if DDT would cause serious harm to human populations
C. To predict if all chemicals are harmful to local pollinator insect populations
D. To ensure all chemicals are banned as soon as possible to protect public health
Answers: 2
Biology, 22.06.2019 06:30
Explain how scientists use geologic time to determine the age of landforms.
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Biology, 22.06.2019 11:30
Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.
Answers: 1
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Which of the following situations are occurring when a red flower (rr) and a white flower (ww) produce a pink flower? a.multiple alleles b.incomplete dominance c.codominance
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Achemical substance made by glands in the endocrine system that travel through the bloodstream and affects cells and tissues throughout the body ?
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DDT is a pesticide that has been used worldwide over the past 50 years. DDT is used to prevent insec...
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