Approximately 80% of HIV diagnoses in the USA are among people who become infected through sexual exposure. Thus, of the approximately 40 000 new HIV infections each year in the US, 32 000 are sexual transmissions. Our results indicate that the HIV-positive unaware group contributes disproportionately to these new infections relative to their percentage of the HIV-positive population in the USA.
Dark red and blue-green indicate regions of high photosynthetic activity in the ocean and on land, respectively. Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities (energy transformation).
Photosynthesis Summary. In summary, photosynthesis is a process in which light energy is converted to chemical energy and used to produce organic compounds. In plants, photosynthesis typically occurs within the chloroplasts located in plant leaves.Photosynthesis consists of two stages, the light reactions and the dark reactions.ome organisms are capable of absorbing energy from sunlight and using it to produce sugar and other organic compounds such as lipids and proteins. The sugars are then used to provide energy for the organism. This process, called photosynthesis, is used by plants and some protists, bacteria, and blue-green algae.