C3 vs C4 Plants. Photosynthesis is the light driven reaction that converts carbon dioxide and water in to energy rich sugars. The process is coupled to the oxidation of water yielding oxygen as a biproduct.4 plants are much more efficient at capturing carbon dioxide. C4 photosynthesis is found in both monocot and dicot species. In contrast to C3 plants, the first stable product formed during photosynthesis is oxaloacetic, which is a C4 compound.
The Gran Telescopio Canarias is by far the largest telescope on earth and measures 34 feet (or 409 inches) across! Its home is in the Canary Islands of Spain. The design and development of this telescope took more than 1,000 people from over 100 companies more than a decade to complete.
The twin 33-foot (10-meter) telescopes at the W. M. Keck Observatory represent the second largest optical telescopes on Earth, located close to the summit of Hawaii's Mauna Kea. Each instrument's main mirror consists of 36 hexagonal segments that work together. Keck I became operational in 1993, followed just a few years later by Keck II in 1996.