When that bacteria changes in some way that reduces or eliminates the use of the drug.
Answer:
2. Direct, 3. 1 2 and 3 I couldn't find 1 srry. :)
Explanation:
Any condition in an experiment that can be changed is a control variable!!
You control it!!
For the answer to the question above, I think that <span>Mendeleev's eka-aluminum is what we know today as <u><em>GALLIUM</em></u></span><u><em>.</em></u>
or the era of Mendeleev is <u><em>Aluminum</em></u> which is that <span>it would <u><em>be a soft metal with a low melting point.</em></u></span>
I hope my answer helped you. Have a nice day!
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