When Nellie is suspended at rest by a pair of gymnastic rings, the upward support forces by the rings will always
A. each be equal to her weight.
B. add up to more than her weight.
C. each be half her weight.
D. add up to equal her weight.
Answer: D
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Judge the following sentence according to the criteria given below: The low tide zone typically has an abundance of algae BECAUSE it is almost always submerged
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Absolute location and relative location are the same thing
Indicate whether the statement is true or false.
Genetically modified (GM) plants are produced by
A) applying pesticides. B) using large quantities of fertilizer. C) joining the DNA of two organisms to produce an organism with recombined DNA. D) mass production in a factory.
Deficiency of which of the following is associated with scurvy?
A) vitamin A B) vitamin B1 C) vitamin C D) vitamin D