The tallest tree is Hyperion (in Redwood National Park) at 379.1 ft. Currently there are over 30 trees over 360 ft tall. There are over 150 trees over 350 ft tall. There are unconfirmed reports of a 380 ft tree that was chopped down in 1912. The biggest Redwood tree size possible is 425 ft. In terms of volume, the biggest is the Lost Monarch.
The symptoms associated with high blood carbon dioxide levels include increased blood pressure, rapid pulse, rubor (redness), muscle twitches, headache, chest-pain, confusion, and fatigue. All of these symptoms depend on the severity of case.
Often one of the first symptoms of a panic attack is hyperventilating (rapidly breathing in and out), which upsets the natural balance of oxygen and carbon dioxide in our system. One view says a low level of carbon dioxide in the blood directly triggers the symptoms of panic, such as feeling lightheaded and dizzy.