The order is calcification of matrix >> cells differentiate into osteoblasts >> formation of the primary ossification >> osteoclasts break down the spongy bone >> formation of the secondary ossification (5,3,1,2,4). It is a fundamental process.
<h3>What are osteoblasts?</h3>
Osteoblasts are cells of the bones, which act to generate bone matrix and modulate the process of mineralization of the skeleton.
Endochondral ossification refers to the mechanism through which the cartilaginous bones generate longitudinal growth.
This mechanism (endochondral ossification) is fundamental during fetal/embryo development.
Learn more about endochondral ossification here:
brainly.com/question/5325975
B, Gases. The gases create an insulation around the planet so it keeps in heat from heat sources.
I believe the answer is Planet Nine.
Doubling time aerobic bacteria generally grow fast and may have a doubling time 30