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.
Early warning signs. The early warning signs of carbon monoxide poisoning can easily be confused for feeling under the weather, which is why Dr. Daniel Rusyniak, medical director of the Indiana Poison Center at Indiana University Health, keeps his top red flags short and sweet: Headache is the most common symptom and is often accompanied by nausea.