While investors may revere this copper for its value, collectors are invariably impressed by the unique designs that adorn these collectible copper rounds. With their lustrous finish and superbly detailed designs, these copper rounds are perfect for giving as gifts for birthdays, graduations, or the holidays.
Simplified photorespiration and Calvin cycle. Photorespiration (also known as the oxidative photosynthetic carbon cycle, or C2 photosynthesis) is a process in plant metabolism which attempts to reduce the consequences of a wasteful oxygenation reaction by the enzyme RuBisCO.
A metabolic pathway that consumes oxygen and ATP, releases carbon dioxide, and decreases photosynthetic output. Photorespiration generally occurs on hot, dry, bright days, when stomata close and the O2/CO2 ratio in the leaf increases, favoring the binding of O2 rather than CO2 by rubisco.