Biology, 27.03.2020 06:21 liljumpmanj
DDT is a synthetic compound commonly used as an insecticide. It was used to control mosquito species that commonly spread diseases like malaria. The data show the percent resistance for three species of mosquitoes over three decades. What explains the trend seen in the data? A) Genetic drift resulted in the random deaths of non-resistant insects, leaving only resistant mosquitoes to breed. B) Artificial selection favored genotypes that were bred by humans to maintain the desired traits in the mosquito populations. C) Gene flow between the three species increased the genetic diversity of the populations, resulting in more DDT-resistant species over time. D) Natural selection favored resistant members of the species, which survived and reproduced at a greater frequency than non-resistant mosquitoes.
Answers: 3
Biology, 21.06.2019 23:30
The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2
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Biology, 22.06.2019 00:30
Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.
Answers: 3
Biology, 22.06.2019 02:00
The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.
Answers: 2
Biology, 22.06.2019 11:30
Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan
Answers: 3
DDT is a synthetic compound commonly used as an insecticide. It was used to control mosquito species...
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