Cellular respiration and photosynthesis are complementary processes because they use each others' products and reactants.
Photosynthesis' products are cell respiration's reactants; likewise, cell respiration's products are photosynthesis' reactants.
Also, photosynthesis is known to take away carbon dioxide from the air and put in oxygen while cellular respiration does the opposite, putting in carbon dioxide while taking away oxygen.
Studying cells helps us to construct better medicines and vaccines, which is beneficial to understanding life.
<span>The technique that uses the images from several telescopes to produce a single image is called 'Astronomical interferometery. By combining images from several telescopes, it is possible for astronomers to create detailed images with high resolutions. </span>