Cyanobacteria play a tremendous ecological role. Among other things, they are responsible for
A) removing tons of oxygen from the atmosphere.
B) converting nitrogen in the soil to nitrogen gas.
C) providing usable forms of carbon and nitrogen for other organisms.
D) killing harmful bacteria in soil.
E) producing many antibiotics.
Correct Answer:
Verified
Q20: The _ resemble the ancestor of all
Q21: Organisms are included in the Protists (or
Q22: Discuss how the world might be different
Q23: Halophiles are able to survive
A)under any extreme
Q24: Each of the following is a common
Q26: In viruses, the capsid
A)is composed of DNA
Q27: Discuss some of the differences between organisms
Q28: Prokaryotes reproduce
A)very slowly.
B)via binary fission.
C)sexually.
D)such that one
Q29: What benefits do plant-eating animals receive from
Q30: Most members of the domain Archaea are
A)found
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