Atomic nuclei contain protons and ________.

A. neutrons
B. isomers
C. ions
D. moles


Answer: A

Biology & Microbiology

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Resource partitioning can often be seen in similar species that occupy the same geographic area. These species avoid competition by living in different portions of the habitat or by utilizing different food or other resources and are called ________ species.

A. fundamental B. allopatric C. sympatric D. exploitative E. competitive

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You have a substance and begin a set of experiments in which you break it down into other substances through chemical reactions. After a few successive reactions, you discover a set of products that can't be broken down further, no matter what type of

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Which of the following is normally found at the 5' end of a DNA strand?

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