During which geological era did Pangea break apart?
a. Archean
b. Paleozoic
c. Mesozoic
d. Cenozoic
e. Proterozoic
C
Biology & Microbiology
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How long is the typical ovarian cycle?
a. 26 days b. 24 hours c. 28 days d. 31 days e. 22 days
Biology & Microbiology
Explain which features of cyanobacteria enable them to survive in a variety of environments.
What will be an ideal response?
Biology & Microbiology
The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds
A) ionic B) hydrogen C) covalent D) polar
Biology & Microbiology
Most pathogens have one preferred portal of entry.
a. true b. false
Biology & Microbiology