Oxygen is produced in the light stage of photosynthesis at Photosystem 2 and results from the splitting of water. Chlorophyll does not absorb green light so in green light there will be less water split and so less oxygen is produced.so thats how we know the reason why a leaf is the color that it is. basically it is because of chlorophyll.
Hope this helps.
It is carbon dioxide or CO2
<span>Connective tissue often consists of relatively few cells embedded in an extracellular matrix.</span>
Organisms have adaptations enabling them to survive within certain conditions in one's environment. One advantage in being able to tolerate variations in wide range of environmental factor is that organisms can adapt to any climate,seasonal temperature,light availability and weather conditions.
