Answer:
supernova
Explanation:
When a high-mass star has no hydrogen left to burn, it expands and becomes a red supergiant. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova. The death of massive stars can trigger the birth of other stars.
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If you mean Fahrenheit and Celsius, than 16 F is greater than 16 C
The challenges range from terrorism and violent extremism, to piracy, political instability, elections-related violence, drug trafficking or deadly viruses.
