1 Gastritis: Inflammation of the stomach, often causing nausea and/or pain. Gastritis can be caused by alcohol, certain medications, H. pylori infection, or other factors.  Stomach cancer: Gastric cancer is an uncommon form of cancer in the U.S. Adenocarcinoma and lymphoma make up most of the cases of stomach cancer.
Phytoplankton receive energy through photosynthesis. Photosynthesis is the process of making glucose using sunlight. Carbon dioxide, sunlight, and water combine, producing gluâ¦cose sugars that the being can use for energy.  Zooplankton however feed off phytoplankton and decaying matter. They are known as detrivores.
They are the base of the food web in these environments. Plankton can be divided into broad functional groups: 1  Phytoplankton are microscopic plants that form the base of the marine food chain.2  Though they are small, the energy they capture from the sun through photosynthesis helps to sustain almost all life in the ocean.hey are the base of the food web in these environments. Plankton can be divided into broad functional groups: 1  Phytoplankton are microscopic plants that form the base of the marine food chain.