Oxygen is recycled in the

a nitrogen cycle
b carbon cycle
c none of these
d water cycle

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

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

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?