One of the general concerns about the widespread use of transgenic organisms is the
A) spread of these transgenic traits to other organisms.
B) need to apply more pesticides to crops and plow the soil twice a year.
C) reduced yields that result from using bioengineered organisms.
D) pressure to bring more land into agricultural production.
A
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What are some factors that could allow flood basalts to have high-volume eruptions?
A) A large amount of magma is generated in the mantle. B) Magma rises to the surface along thick dikes. C) The magma is hot and has a low viscosity. D) All of these are correct.
What did the Big Bang theory predict that was finally confirmed years after it was formulated?
What will be an ideal response?
Which of the following was true of Kekulé's proposal for the structure of benzene?
A) It was readily accepted. B) It was rejected because it was inconsistent with experiment. C) It was not readily accepted since it did not account for the very different reactivity of benzene compared with alkenes. D) It was not readily accepted since it did not account for the known structure of benzene.
Which of the following phase changes does not involve a solid?
A) evaporation B) melting C) sublimation D) None, they all involve a solid.