What biogeochemical cycles have been heavily affected by human activities? Check all that apply.
_____ the water cycle
_____ the phosphorus cycle
_____ the nitrogen cycle
_____ the carbon cycle
__X__ the water cycle
__X__ the phosphorus cycle
__X__ the nitrogen cycle
__X__ the carbon cycle
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Which of the following kinds of receptor consists only of a naked nerve fiber ending?
A. Pacinian corpuscle B. cochlear hair cell C. cone D. Meissner's corpuscle E. nociceptor
Which of the following would NOT strongly
associated with the word "acid"?
a. excess hydrogen ions b. magnesium hydroxide c. contents of the stomach d. HCl e. pH less than 7
The diversity of an animal community is unrelated to the physical structure of a plant community
Indicate whether the statement is true or false
Which animals have had the bovine growth hormone injected into them in order to produce larger individuals?
a. All of the answer choices are correct. b. cows c. fish d. pigs e. sheep