The correct answer is D. Sara suddenly became very ill; therefore, she went to see her doctor.
<span>Stem cell research is being conducted for cancer, diabetes and spinal cord injuries. But stem cell research has not included bird flu, sometimes called avian influenza Bird flu is caused by a virus which are not effected by stem cells applications.</span>
The part of the microscope that supports both the ocular lens and the revolving nosepiece is called the <u>head.</u>
The microscope is a device that is used to examine smaller-sized objects that can not be seen with bare eyes.
The most commonly used microscopic devices are the electron microscope and light microscope.
Due to its high resolving power and powerful lenses, it can see small objects of sizes ranging between 10^-3 millimeters and 0.2 micrometers.
Moreover, it is used to see objects at uni and multi-cellular level allowing the scientists to observe organelles such as mitochondria and nuclei in a cell.
If you need to learn more about microscopes click here:
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Answer:
B. Leaves provide a place for photosynthesis to occur.
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