Answer:
The global conveyor belt's circulation is the result of two simultaneous processes: warm surface currents carrying less dense water away from the Equator toward the poles, and cold deep ocean currents carrying denser water away from the poles toward the Equator.
Explanation:
Answer:
Prevailing winds influence the precipitation by regulating amount of water vapor in air, direction of wind movement and by making cold and hot air masses to move.
Explanation:
Winds make both hot and cold air masses to move. The hot air rises up with wind and cold air rushes to take its place. The hot air coming from water bodies towards the land carry ample of water vapor and causes precipitation in the region. On the other hand, the air coming from land masses does not have enough water vapor to cause any rains in the region.
The secondary cell wall is a structure found in many plant cells, located between the primary cell wall and the plasma membrane. The cell starts producing the secondary cell wall after the primary cell wall is complete and the cell has stopped expanding.
Secondary cell walls provide additional protection to cells and rigidity and strength to the larger plant. These walls are constructed of layered sheaths of cellulose microfibrils, wherein the fibers are in parallel within each layer. The inclusion of lignin makes the secondary cell wall less flexible and less permeable to water than the primary cell wall. In addition to making the walls more resistant to degradation, the hydrophobic nature of lignin within these tissues is essential for containing water within the vascular tissues that carry it throughout the plant.
The secondary cell wall consists primarily of cellulose, along with other polysaccharides, lignin, and glycoprotein. It sometimes consists of three distinct layers - S1, S2 and S3 - where the direction of the cellulose microfibrils differs between the layers.
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