Answer:
The correct order is:
4. Mesenchymal cells aggregate.
2. Osteoblasts differentiate within mesenchymal connective tissue.
1. Clusters of osteoblasts form osteoid that becomes mineralized.
3. Spicules of bone radiate out from the ossification centers.
Answer: A
Explanation: There is no need to conduct and experiment if you already know the answer
Sorry i cant see that question
Answer:
we can see the shape of dna
Explanation: