Found at the lowest point of a large drainage area, these seasonal, marsh-like ponds collect and store water from rain and runoff. Unlike vernal pools, playas generally fill when temperatures are unsuitable for plant growth, and often the water is salty, alkali or both.
source- google
Many sugar plantations were built in the northeast region of brazil. Brazil is a country that is considered as the largest sugarcane producer in the whole world. The weather in brazil is perfectly suited for the production of sugarcane. Brazil is also famous for the production of cocoa and cotton. The sugarcanes produced go to the factories where sugar is produced and exported to different parts of the world. In the northeast region of brazil oil exploration is also a part of the economy along with tourism. Tourists from different parts of the world come here.
it is not obtuse if the angles measure is 20.
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