What tree is considered to be the most dangerous in the world?
The manchineel tree is native to tropical southern North America and northern South America. All parts of the tree contain strong toxins and even the merest contact with human skin causes a breakout of blisters, and blindness can occur if it touches a person's eyes. In some parts of its range, many trees carry a warning sign, while others are marked with a red "X" on the trunk to indicate danger.
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How deep is the root system of a giant sequoia?
4 meters (13 feet)
20 meters (60 feet)
40 meters (130 feet)
80 meters (260 feet)
This kind of tilted forest is a common sight in subarctic taiga. What is this phenomenon caused by?
low sun position