Cyanobacteria became the first microbes to to produce Oxygen (O2) as a product of Photosynthesis.
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<span>A. economics class,hair cut,life insurance
The list obviously contains all services while other choices contain products.</span>
Develops through gradual process over many generations.
Answer:
B. The population must be very large.
Explanation:
An individual's blood pressure, body temperature, and heart rate start to soar to dangerously high levels.
