Teacher Edition. Photosynthesis is a complex process that converts light energy into chemical energy in the form of carbohydrates and/or other compounds in plants and other photosynthetic organisms. Photosynthesis occurs in two stages: light dependent and light independentreactions (Calvin Cycle).
The lymphatic system is part of the circulatory system and a vital part of the immune system, comprising a network of lymphatic vessels that carry a clear fluid called lymph (from Latin lympha meaning water) directionally towards the heart.ne of the main functions of the lymph system is to provide an accessory return route to the blood for the surplus three litres. The other main function is that of defense in the immune system. Lymph is very similar to blood plasma: it contains lymphocytes and other white blood cells.
Summary. The lymphatic system is a network of tissues and organs. It is made up of. 1  Lymph-a fluid that contains white blood cells that defend against germs. 2  Lymph vessels-vessels that carry lymph throughout your body. 3  They are different from blood vessels. 4  Lymph nodes-glands found throughout the lymph vessels.