I believe the answer to your question is D
The glucose required for cellular respiration is produced by plants. Plants go through a process known as photosynthesis. ... This energy is then converted along with water and carbon dioxide from the atmosphere into glucose and oxygen. <em>Photosynthesis</em>. ... During photosynthesis, plants absorb sunlight and carbon dioxide from the air. Through a series of steps, much like cellular respiration, they convert these reactants into the products oxygen and glucose. The plants then can use the oxygen and glucose to make ATP in cellular respiration
<span>Sumerians built walls using the natural resource they were surrounded with, which was namely clay. They used this clay to create fired mud-bricks, as there was not any other building stone available at the time. However, the clay mud-bricks proved to be a solid structure for town fortification.</span>
