Photosynthesis, the process by which green plants and some other organisms convert light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. It would be impossible to overestimate the importance of photosynthesis in sustaining life on Earth. If photosynthesis ceased, there would soon be no food or other organic matter left on Earth. And during cellular respiration, a glucose molecule gradually breaks down into carbon dioxide and water. Along the way, some ATP is produced directly in the reactions that convert glucose. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get the original essay However, a much larger amount of ATP is produced later in a process called oxidative phosphorylation. Biotic factors refer to all living organisms within an ecosystem. These can be plants, animals, mushrooms and any other living thing. Abiotic factors refer to all the non-living elements of an ecosystem. Abiotic factors come in all types and can vary in different ecosystems. For example, abiotic factors present in aquatic systems can be things like water depth, pH, sunlight, turbidity (amount of water turbidity), salinity (salt concentration) , available nutrients (nitrogen, phosphorus, etc.) and dissolved oxygen (amount of oxygen dissolved in water). Abiotic variables found in terrestrial ecosystems can include things such as rain, wind, temperature, altitude, soil, pollution, nutrients, pH, soil types, and sunlight. The biotic factors I depend on are cows, pigs, fruits, grasses and vegetables. . Heterotrophs cannot make their own food, so they must eat or absorb it. For this reason, heterotrophs are also called consumers. Consumers include all animals and fungi as well as many protists and bacteria. They can consume autotrophs or other heterotrophs or organic molecules from other organisms. Heterotrophs exhibit great diversity and can seem much more fascinating than producers. But heterotrophs are limited by our complete dependence on the autotrophs that were originally our food. If autotrophic plants, algae, and bacteria disappeared from the earth, animals, fungi, and other heterotrophs would soon disappear as well. All life requires a constant supply of energy. Only autotrophs can transform this ultimate solar source into the chemical energy contained in the foods that fuel life. Chemosynthesis, process in which carbohydrates are made from carbon dioxide and water using chemical nutrients as the energy source, rather than sunlight used for photosynthesis energy. Most life on Earth is powered directly or indirectly by sunlight. There are, however, certain groups of bacteria, called chemosynthetic autotrophs, that are powered not by sunlight but by the oxidation of simple inorganic chemicals, such as sulfates or ammonia. Chemosynthetic autotrophs are a necessary part of the nitrogen cycle. Certain groups of these bacteria are well adapted to conditions that..