Answer:
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Answer:  The average global temperature has increased by a little more than 1°. The temperatures we experience locally and in short periods can fluctuate. In the past, a one- to two-degree drop was all it took to plunge the Earth into the Little Ice Age. The strong warming trend of the past four decades likely reflects a shift 
Explanation: hope i helped 
 
        
             
        
        
        
<span>the platelets in the blood comes in contact with air they decompose to form thermoplastic, thermoplastic combine with inactive thrombotic, formed by the combination of Vitamin K and Calcium ions,to form active thrombi,thrombi combines with the fibrin in the blood plasma to form Fibrin, this Fibrin entangle with blood corpuscles and thus clot is formed... i hope i helped
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