exposure to drugs causes mutations which produce drug-resistant populations of microbes.
<h3>What is the effect of using same type of drug?</h3>
Drug-resistant populations of microbes arise when the exposure to drugs causes mutations because this exposure produce resistance which leads to mutation in the organism. Due to this mutation, the drugs did not work on the organism anymore.
So we can conclude that exposure to drugs causes mutations which produce drug-resistant populations of microbes.
Learn more about mutation here: brainly.com/question/17031191
The nucleus directs all activities that happen within the cell and contains the cell genetic material (DNA).<span> The nucleus gives the signal to the cell to grow, divide and/or make proteins. </span>
Answer: layer c is oldest but I can see all of the options
Explanation:
Alright so, I don't see a picture of the fossil anything but I'll make a prediction. The fossil would be 65 million years old. This isn't in human time because it's way too long ago. So, this organism is not alive anymore. So, there would be none of these type of organisms left. Hope this helps! ^^