POSSIBLE POINTS 1 2 DIRECTIONS: Study the diagrams below. Identity how many atoms, elements, molecules, and compounds there are
Total # of atoms
# of elements
# of molecules
# of compounds
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Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.