the first plants and anthropodes appear on land approximately about 470 million years ago
It peaked in the late 18th Century, <span> when the largest number of slaves were captured on raiding expeditions into the interior of West Africa.
In short, Your Answer would be: Option D
Hope this helps!</span>
Monsoon is known as unifying bond because of the following reasons:
1) The peninsular plateau, under influence of the sea from three sides, has moderate temperatures.
2) The effect of monsoon on the Indian subcontinent is quite perceptible. The seasonal alteration of the wind systems and the associated weather conditions provide a rhythmic cycle of seasons.
3) The people of India especially the farmer from north to south and from east to west, eagerly await the arrival of the monsoon. These monsoon winds bind the whole country by providing water to set agricultural activities in motion. The river valleys which carry this water also unite as a single river valley unit.
Recrystallization is the process through which the preexisting crystals are destroyed, and later the material left of them crystallizes all over again and forms new crystal structures. Basically this process happens when a crystal structure is exposed to high temperatures and pressures, When that happens, the crystal structure falls apart, often being melted. After it is melted, the material will eventually start to cool off again. As it cools off, new crystals will start to form. What type of crystals will form will depend on the rate of cooling off, but also on the agent that destroyed the initial crystals, as it can mix with the material, gradually giving birth to a new crystal structure.
