B. Bacteria
The bacteria break the dead leaves down and release the nutrients back to the soil.
It start out with one cell because Mitosis is a cell division of a single cell into two identical daughter cells. So, at the beginning of mitosis, there is only one cell.
The correct answer is letter D. These beetles have an adapted structure. This refers to traits that they have inherited from their ancestors gene pool. Overtime the need and function for these structures are not needed by beetles in their overall survival, but the genetic code remains in their system which still gives birth to their wings that are not used anymore because of the new type of adaptation that they are going through.
A food web demonstrates which organisms transfer energy to other organisms. It helps maintain the ecosystem because if one life form went extinct, it could destroy the whole web.
Human Impacts on the Carbon Cycle - Fossil Fuels: In the natural carbon cycle, there are two main processes which occur: photosynthesis and metabolism. During photosynthesis, plants use carbon dioxide and produce oxygen. During metabolism oxygen is used and carbon dioxide is a product.
