Answer:
severe drought, since other are biotic factors.
Anticlines<span> are </span>folds<span> in which each half of the </span>fold<span> dips away from the crest. </span>Synclines<span> are </span>folds<span> in which each half of the </span>fold<span> dips toward the trough of the </span>fold. You can remember the difference by noting that anticlines<span> form an “A” shape, and </span>synclines<span> form the bottom of an “S.”</span>
Answer:
The chronological order will be - c, b, d, a
Explanation:
Intramembranous oscification is the process of conversion of mesenchymal tissue into the bone which is completed in the following four steps -
- Some of the mesenchymal cells differentiate into capillaries and the others into osteoblasts. These osteoblasts appear in clusters and these clusters are named as the Oscification Centre.
- Osteoid is secreted by the osteoblast cells and it calcifies in few days.
- Woven bone and its periosteum are formed due to calcification and further deposition.
- Finally the formation of a mechanically stronger bone, lamellar bone, takes place.