The biosphere is composed of the parts of Earth where life exists. It includes the dark environment of the ocean's deep trenches, the rainforests and high mountaintops. Bacteria, protozoa and up to 30 million species of animals, plants and fungi are included in the biosphere.Know More
Although the biosphere is a life-supporting global ecosystem, it comprises a relatively thin part of Earth's surface. The biosphere measures approximately 12 miles from top to bottom, but almost all life exists between 1,640 feet below the ocean's surface to 3.75 miles above sea level.
Some ancient prokaryotes developed a way to convert carbon dioxide and water to make simple sugars. Over time, these photosynthetic organisms helped change the biosphere so that new forms of life could exist. The biosphere has existed for 3.5 billion years and is a large ecosystem comprised of many smaller ecosystems.
The biosphere is characterized by the continuous cycling of matter, and water is a major factor. The flow of solar energy helps maintain the structure of organisms, and the elements carbon, hydrogen, nitrogen, oxygen and sulfur combine with proteins, lipids and nucleic acids to form the building blocks of life. Biosphere reserves exist to help people establish and maintain a balanced relationship with the natural world.Learn more about Biology
Life processes are the series of actions that are essential to determine if an animal is alive. Living things have seven essential processes in common: movement, respiration, sensitivity, growth, reproduction, excretion and nutrition. All things fall into one of three categories: living, used to be living or not living; the presence of all seven life processes indicates a living thing.Full Answer >
Algae grows via photosynthesis, which requires the presence of carbon dioxide, light (usually from the sun) and water. Photosynthesis is the process of using light energy to convert carbon dioxide and water into glucose, a sugar which can be broken down by an organism into chemical energy. This chemical energy then fuels the organism's function and growth.Full Answer >
Plants use a process called photosynthesis to convert light energy from the sun into sugar energy in the presence of carbon dioxide and water. This process takes place in organelles called chloroplasts, which are found in abundance in the leaves of the plant.Full Answer >
Along with fat and carbohydrates, protein is considered a "macro-nutrient," which means that the body requires large amounts of it; however, unlike fat and carbohydrates, the body does not store protein, so it needs to be acquired through the diet, according to WebMD.Full Answer >