http://en.wikipedia.org/wiki/Calamites
typhoon
Catastrophic events like earthquakes, floods, hurricanes, or mudslides are among the worst natural calamities costing thousands of lives every year. Such events also destroy property worth billions of dollars, make thousands of people homeless, and injure many more. They are the most dangerous natural calamites.
Some extinct plants in the taiga include the giant club-moss (Lepidodendron), the scale tree (Lepidodendron), and the Calamites tree (Calamites). These plants existed during the Carboniferous period and are no longer found in the taiga biome today.
The most powerful natural disaster that can occur is a super volcano eruption.
The two natural things that occur in a cycle are day and night as well as the seasons. These cycles are part of the Earth's natural rhythm and occur regularly.
A standing wave can occur only at specific frequencies that are called natural frequencies.
The natural phenomenon that allows for the growths on trees to occur is called photosynthesis.
No. They can occur in the laboratory also.
2001
Cyclones and volcanic eruptions do not occur in Tasmania.
Natural selection
hurricanes