<span> i think it si called an autotroph?</span>
Answer:
chemistry is basically the study of matter and their properties. it also it also explains how and why some substances combine or separate to form different substances.
<span>The answer is nuclear imaging. A subject is asked to take in a radionuclide (radioactive
isotopes) and as the radioactive material passes though the body, it continually emits radiation that is detectable by an instrument such as a gamma camera. Examples of nuclear imaging
techniques are SPECT and PET.</span>
The answer is C: a pollutant.
