<u>A) Possible trigger for this tsunami:</u>
The reason which might be possible for the tsunami is massive sea waves of water which are resulted from the under sea earthquakes which struck in the gulf of Alaska triggered tsunami. 
<u>B) Officials those who doesn’t prepare the public for the possible disaster:</u>
The officials should make the people aware about the disaster and should evacuate the people from that area to avoid any loss of damage to life and property. 
<u>C) Is preparations are adequate to prevent a catastrophe for the Pacific Northwest:</u>
No, the state has not done enough to prevent the damage and people are till now building in this potential danger zones.
 
        
             
        
        
        
Answer:
the troposphere absorb outgoing IR radiation  
Explanation:
Global warming is caused by the elevated temperature in the troposphere, which is the lowest layer of the Earth's atmosphere, where it is more than 75% of the atmospheric mass and is the closest layer to the Earth. When the Earth is heated by the sun, it receives infrared radiation, which is re-emitted by the earth to the atmosphere. However, the greenhouse gases present in the troposphere, do not allow this infrared radiation to be released, as they absorb this radiation and direct it back to the earth, causing this radiation to be trapped in the atmosphere and generating an increase in the rates of temperature that cause global warming.