There are numerous ways, from using machinery like special barometers to see the changes in the air, to using aircraft for reconnaissance. They also use satellites to monitor how air flows are changing. They inform the public by working with institutions like fire brigades or police departments or similar institutions to spread the news to people.
One force that acts on tectonic plates, which causes them to fold and cause Earthquakes, is gravity. Another is friction, and yet another is thermoelectric. All of these combine.
Answer: b. Clear-cutting
Explanation: Clear cutting is a cheap and effective way of harvesting trees or timbers, this methods helps the forest operators to get the best out of a forest at a very reduced cost.
Clear-cutting is bad because removing the whole tree from an area destroys outrightly the natural habitat of most widelife, and it will also lead to the destruction of the eco-system that relies on the forest.
