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.
If you or your family members experience carbon monoxide poisoning symptoms, quickly walk outside for fresh air and call 911. Even if you start to feel better, you can still have toxic levels of CO in your system and might require medical help.