In the adults, the growth rate slows with age. The healing mechanism of the different cells if damaged is different than that of the younger ones. If a cartilage is damage in the adults, the chondrocytes which are still surviving secrete more extracellular matrix in order to heal the damaged cartilage. The chondrocytes cells are present in the cartilage, and they function to maintain the cellular matrix of the cartilage.
In earth, there are alot of plants which release oxygen into the atmosphere as a waste product compared to venus where there are no trees. and if the earth was cliser to the sun all our oceans will dry up
