The plants and animals now present on acreage from which the trees were removed ten years earlier
represent
a. primary succession.
b. a climax forest.
c. pioneer species.
d. secondary succession.
e. species introductions.
D
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Use the following graph to answer the following question(s).
Regardless of the amount of fat contained in cookies, the most common cell size in a cookie was ________.
A. between 1,000 and 15,000 ?m B. very large (larger than 1,500 ?m) C. very small (smaller than 100 ?m) D. between 280 and 500 ?m
Which of the following sugars is found in
RNA and NOT in DNA?
a. glucose b. deoxyribose c. deoxyribulose d. ribose e. ribulose
Specific immune responses are also referred to as innate immunity
____________________ Indicate whether the statement is true or false.
Checkpoint mechanisms can determine whether DNA has been properly regulated but whether DNA is segregated to the daughter cells.
a. true b. false