the anwser for your question: pH
Two brain structures the size of matchsticks that rest above the nasal cavities are the olfactory bulbs.
It is a part of your brain which is responsible for providing your with olfactory activities, meaning, the ability to smell. It is located at the foremost front of your brain, somewhere around your eyes, and is connected with the nose to give the smelling sensation.
1 fill the beaker with water
2 check the amount you have
3 drop the marble in and subtract the original amount with the one you have now
Answer:
Mitochondria stops working.
Explanation:
When the mitochondria of fish exposed to Rotenone, it inhibits the cellular respiration which is the main cause of death of fishes. This inhibiting of cellular respiration in mitochondria leads to reduction in cellular uptake of oxygen and this reduction is responsible for the death of fishes. This Rotenone releases by the plants present in the water as well as used as pesticides for killing of fishes.
This whole is experiment is called the Kirby Bauer disk diffusion method. It is testing the susceptibility of microorganisms to disinfectants to see which disinfectant works the best against killing the bacteria.
By asking which is the control it would mean the experiment is unaffected and kept the same.
That means the answer is C because water does not affect the bacteria
