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.
The movement of oxygen and carbon dioxide in and out of leaves during photosynthesis occurs by diffusion. The higher concentration of carbon dioxide in the air diffuses into the leaf for photosynthesis.Oxygen produced during photosynthesis builds up to higher concentrations and diffuses out of the leaf into the air which has a lower concentration of oxygen. Page: 1  1. 2  2.he higher concentration of carbon dioxide in the air diffuses into the leaf for photosynthesis. Oxygen produced during photosynthesis builds up to higher concentrations and diffuses out of the leaf into the air which has a lower concentration of oxygen. Page: 1  1. 2  2.