Anaerobic photoautotrophs were the first organisms to release oxygen into the early atmosphere.
a. true
b. false

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

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups

List five ways we are indebted to phytoplankton