Anytime they feel the government is not doing their job or attending to their needs
<span>c. bacteria that could produce oxygen
</span>Which evolved during the Paleozoic Era?<u>bacteria that could produce oxygen
</u>
NOT:
a. earth’s first land plants
b. the first humans
<span>d. saber-toothed cats</span>
Great compromise ....i think ...needs more details. :)