Cyanobacteria use water, carbon dioxide, and sunlight to create their food, and expel oxygen as a by-product. The real significance of stromatolites is that they are the earliest fossil evidence of life on Earth. ... They were the first known organisms to photosynthesis and produce free oxygen.
I believe the correct answer is D, based on my general knowledge.
Hope I helped. ^ω^
The Plan called for each state to have one vote<span> in Congress instead of the number of votes being based on population.
</span>
Based on studies a person is 11 times more likely to be in an automobile accident or collision when they have reached the Blood Alcohol Concentration (BAC) of .08. This is considered the "legal limit" in the United States. Mothers Against Drunk Driving (MADD) helped to pass the legal limit of .08.
