The answer should be <span>early 1800's </span>
i know the answer is false
Chemosynthesis is the biological conversion of one or more carbon- containing molecules.
The answer is : D. it may be revised with increasing scientific knowledge.
Explanation: Not only did I take the test, but the current model of the atom isn't similar to the model of the solar system whatsoever. Nor has it stayed the same for centuries. In fact, all of it's revision occurred in the 20th century, not several of centuries. It changed multiple times. Aside from that, the model isn't similar to the model of plum pudding. Therefore, the reasonable answer is D. The model of the atom has changed over time and will continue to do so if more is discovered.
<span> Oxygen is produced by plants and green-blue algae and consumed by weathering and burning. And yes, also by animals breathing, but that's actually pretty marginal. Oxygen levels are far from constant. There is evidence that in the last 500 million years it fluctuated between 15% and 30% percent.
Hope this helped!
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