Trees are affected by many factors. Global warming is changing rainfall, humidity, air composition, solar radiation, heating and cooling. Plants are sensitive to any of these factors. When all of the factors start to change at once, it may lead to devastation in the plant world.
Winter arrived with December, and the world continued to suffer the loss of the Internet and most forms of communication. Supply chains were disrupted. The only mass form of personal communication was the letter, and postal workers were having their worst year ever, as they were actually meeded. Food was becoming scarcer and more expensive, as was fuel for vehicles and heating. Major cities experienced riots on a regular basis, spurred on by religious fervor and want. Civilization was on the brink of collapse.
Western governments use thermal heating standards for public protection from the damaging effects of wireless radio frequency (RF) radiation. Eastern governments use biological standards that are much lower due to the extensive long term radiation damage that has been seen to occur in humans at the western thermal heating standard.