Answer:
<u>The major cause of the change that society had on its view on smoking since 1960 was because of scientific information wherein scientists found that smoking causes cancer. The smoke of cigarette contains around 70 chemicals called carcinogens. These are known to cause </u><u>cancer.So</u><u> </u><u>that</u><u>,</u><u> society </u><u> </u><u>has</u><u> </u><u>changed its view on smoking since 1960</u><u>.</u>
Explanation:
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Answer:
B. is the answer
Explanation:
form compounds with hydrogen and oxygen .
Cyanobacteria helped produce O2. Because it helped releasing O2 into the atmosphere, today we see different animals because Cyanobacteria helped reduce the poor oxygen in the atmosphere.