Genetically modified crops
A. have been shown, in multiple studies, to be dangerous to eat.
B. are advantageous for farmers because the seeds are inexpensive.
C. cannot transfer their genes to other species.
D. have contaminated traditional seed supplies with their genes.
Answer: D
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A 10-kg brick and a 1-kg book are dropped in a vacuum. Acceleration of the 10-kg brick is
A. the same as that of the 1-kg book. B. zero. C. 10 times that of the 1-kg book. D. 5 times that of the 1-kg book.
There are less than 500 species of fish, crustacean, and mollusks that are regularly harvested from the
ocean. Indicate whether the statement is true or false.
Coarse-grained regolith where 20 to 80 percent of the fragments are greater than 2 millimeters in size is called
A) soil. B) rock. C) earth. D) debris.
In 2015, Bandar Mashshar, Iran had a heat index value of ________, which is dangerous for humans
A) 20ºC (32ºF) B) 32ºC (90ºF) C) 50ºC (122ºF) D) 43ºC (109ºF) E) 74ºC (165ºF)