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Carbon Dioxide
The products of photosynthesis is used by organisms because they products are glucose and oxygen. Organisms use the oxygen in cellular respiration and the glucose is used for energy.
Organisms which need oxygen are called aerobic organisms or aerobes. The oxygen is used in the process of respiration to release energy from food. Organisms which do not use oxygen in respiration are called anaerobic organisms or anaerobes. See: http://en.wikipedia.org/wiki/Aerobic_organism
carbon, oxygen, and hydrogen
On the basis of oxygen requirement microorganisms are classified asAerobes: organisms that use molecular oxygen as electron acceptor.Anaerobes: organisms that use some molecule other than molecular oxygen as electron acceptor.Facultative organisms : organisms that can use either molecular oxygen or some other chemical compound as electron acceptor.
Carbon Dioxide
anaerobes
The products of photosynthesis is used by organisms because they products are glucose and oxygen. Organisms use the oxygen in cellular respiration and the glucose is used for energy.
Photosynthetic cyanobacteria were the first organisms to produce oxygen. The effect of their oxygen production was that the earth became an environment which was suitable for life.
Aerobic organisms use oxygen.
It would be impossible for oxygen requiring organisms to exist before photosynthetic organisms because there was not oxygen in the atmosphere for these organisms to breathe. Photosynthetic organisms take carbon dioxide and water in and create oxygen as waste. Before these photosynthetic organisms existed there was not enough or any oxygen in the atmosphere for organisms requiring oxygen to survive.
Aerobic organisms require oxygen.
Plants containing chloroplasts
It is important to not that weathering does not involve movement of rock like in the case of erosion. The five agents of weathering are ice, water, waves, gravity and snow.
These organisms do not need oxygen. They are called anaerobes.
Organisms which need oxygen are called aerobic organisms or aerobes. The oxygen is used in the process of respiration to release energy from food. Organisms which do not use oxygen in respiration are called anaerobic organisms or anaerobes. See: http://en.wikipedia.org/wiki/Aerobic_organism
Organisms use the oxygen they absorb from the air for their cells. The cells need this oxygen in order to carry out their functions.