Scientific data:
A) can be generalized to a much larger population.
B) are used to support or refute a hypothesis.
C) cannot be collected in a completely unbiased way.
D) are always true.
E) must be collected in laboratories.
B) are used to support or refute a hypothesis.
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A common resident of the rhizosphere that can enhance plant growth is ________.
A. Sphingomonas B. Azotobacter C. Erwinia D. Pseudomonas
Teeth aren’t exactly bones, but they’re made up of similar tissues and are subject to the same problems bones may have. In what way(s) do you predict the disease rickets might affect teeth?
_____ Periodontal disease: Redness and swelling elicited by bacterial infection of the gums. _____ Delayed formation: The baby teeth may not erupt until after one year. When they erupt, they may be smaller than normal. _____ Increased likelihood of cavities: Low vitamin C status prevents sufficient mineralization, allowing infection to establish on the teeth. _____ Canker sores: Painful mouth sores associated with bacteria and/or viruses.
Which of the following is NOT a component of DNA?
In certain plants, some of the roots may be modified to carry out unusual functions. Which of these is not an example of one of these special functions?
A. help absorb oxygen B. store food or water C. parasitize other plants D. carry out photosynthesis E. discourage herbivores