Biology, 13.06.2020 01:57, evere11605
DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, today DDT is largely useless against many
insects. Which of the following should have occurred for this pest
eradication effort to be successful in the long run?
A) Larger doses of DDT should have been applied.
B) All habitats should have received applications of DDT at about the same time.
C) The frequency of DDT application should have been higher.
D) None of the individual insects should have possessed genomes (DNA) that made them resistant to DDT.
Answers: 1
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What do scientists need to look at before developing an argument
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Biology, 22.06.2019 00:10, bobtothemaxthe1st
Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.
Answers: 1
Biology, 22.06.2019 14:00, jamiecoolgal8697
Why are current extinctions of concern to enviromentalists?
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Biology, 22.06.2019 18:30, ryanbreland14
Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas
Answers: 2
DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, to...
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