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 is the process that plants undergo in order to transform solar energy into chemical energy stored in the bonds of sugar molecules. The overall process of photosynthesis is typically represented by the following equation: 6 CO2 + 6 H20 + sunlight ------------> C6H12O6 + 6 O2. Plant leaves contain small pores termed stomata that serve to regulate the entrance and exit of carbon dioxide, oxygen and water. In short, through the process of photosynthesis CO2 and H20 form new bonds, generating glucose (C6H12O6), releasing oxygen during the process. The end result of photosynthesis is glucose, which serves to store some of the potential energy originally present in the sun.