A. epithelial cells form from the body's skin
The correct answer is Mitosis !! B !!
Mitosis did not do DNA varriations !!
The correct answer is that the shells of clams and other mollusks dissolve when the pH becomes more acidic.
This is because the shells of clams and other mollusks are made of calcium carbonate that is dissolved in acidic conditions. The pH needs to be low to dissolve calcium carbonate into it. It takes few days to dissolve the shell completely.
Hello There!
Based on my First Aid classes the answer is D. All of the above.
If someone turns unconscious, you'd have to perform CPR and call an emergency service as soon as possible.
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- Hannah ❤
Answer:
True
Explanation:
In phase-contrast objective and a phase contrast optical systems is equipped with Light microscope .
Phase contrast microscope is used to differentiate unstained structures in a cell that differ in refractive indices and thickness. Thus it is usefull for examining living unstained organisms.
Light that passed through materials of different refractive index and/or thickness will undergo a change in Phase. The difference in phase or wave front irregularities cause variation in brightness of the structures.
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