Caus 12. The Irish potato famine was caused by a
c. water mold.
d. bacterium.
a. potato virus.
h colonial alga.

How does a lytic infection differ from a lysogenic infection?

In which situations is the principle of cross-cutting relationship useful in determining relative age?

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen