Answer:Argon is the third noble gas, in period 8, and it makes up about 1% of the Earth's atmosphere.
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A megawatt is about a thousand times bigger than a kilowatt
The hypothesis is a claim or prediction. <u><em>If </em></u><em>in Petri plates, contaminated with Penicillium notatum, bacteria are dead, </em><u><em>then</em></u><em> the fungus must be inhibiting bacteria growth and killing the existing ones. </em>
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A hypothesis is a conjecture. A researcher hypothesizes to predict what is going on or what is expected to occur. The hypothesis is a claim of how it works a relation between two or more variables. Usually, it is written in the present time.
According to Fleming's experiment and his accident in the lab, we can postulate the following hypothesis.
<u><em>IF </em></u><em>in </em><em>Petri plates</em><em>, contaminated with </em><em>Penicillium notatum</em><em>, </em><em>bacteria </em><em>are dead, </em><u><em>THEN</em></u><em> the f</em><em>ungus</em><em> must be </em><em>inhibiting</em><em> bacteria </em><em>growth</em><em> and </em><em>killing</em><em> the existing ones. </em>
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Fleming observed that in plates where the fungus was growing, there were no bacteria. <em>He compared these plates with the other ones with no fungi and saw that on the other plates bacteria were still alive</em>. So he assumed that <em>Penicillium notatum</em> was causing the death of bacteria and inhibiting their growth.
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Answer:
animals, oxygen combines with food in the cells to produce energy for daily activity and then gives off carbon. The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale