Spring (hydrology) and water supply network are subjects the hydrogeologist is concerned about; Water cycle, hydrosphere and water resources are larger concepts which hydrogeology is a part of; References
7.2 Photosynthesis occurs in chloroplasts in plant. cells. ï§ Chloroplasts are concentrated in the cells of the. mesophyll, the green tissue in the interior of the. leaf. ï§ Stomata are tiny pores in the leaf that allow. carbon dioxide to enter and oxygen to exit. ï§ Veins in the leaf deliver water absorbed by roots.
So let's start with oxygen which for the most part exists as molecular oxygen OÂ² which is O=O. Oxygen makes up about 21% of the air we breathe. It can be produced by photosynthesis using sunlight, water and Carbon Dioxide through a number of processes for a different post. Oxygen is used in our bodies with glucose to produce energy and water. This energy is then used throughout the body where needed.