Please Help!!!!!!
Using the eruption of Mt. St. Helena as a model, explain the constructive and destructive mechanisms that form continental features. (Be sure to use the RACE strategy to answer this question. 5-10 sentence minimum)
Answers
Answer:
3Climate change measures crucial for Asia-Pacific: UN
AFP/ PTI / Bangkok September 29, 2009, 20:39 IST
UN experts today warned that Asia-Pacific nations and other developing
countries need support to combat climate change as they face an
intensification of extreme weather such as the Philippine floods.
The comments came as a divide between rich and poor nations continued
to dominate crucial negotiations in Bangkok to develop a new climate
treaty before world leaders meet in Copenhagen in December.
UN climate chief Yvo de Boer said one of the "key elements" of a deal
was increased support for developing countries in the Asia-Pacific
region and elsewhere to step up efforts to deal with the effects of
climate change.
"Typhoons, floods and extreme weather events regularly make headlines
in this part of the world," de Boer told reporters.
De Boer said the devastation in the Philippines was "the most recent
tragic example" of climate change affecting the region, as the death
toll reached 240, with the same storm, Ketsana, also killing 22 people
in Vietnam.
"The impacts are likely to become more intense over time. Dealing with
emergency situations, reducing disaster risks and increasing the
climate resilience is a necessity for this region," he added.
Indonesia became the latest country to announce plans for a cut in
greenhouse gas emissions, saying it would cut them by more than a
quarter
Answer:
Our Earth is ever changing. Some of these changes, like the creation of the Grand Canyon, take millions of years to happen, and some of them are catastrophic changes that occur in seconds. These changes to our Earth can be categorized as either constructive forces or destructive forces.
Constructive Forces :-
Constructive Earth processes are changes that add to the surface of the Earth, and some of them take millions of years to occur. The Hawaiian Islands are a great example of a slow constructive change. These islands have formed over millions of years due to a hot spot volcano. This type of volcano forms over an area in the Earth's crust where the crust is very thin and lava consistently makes its way to the surface. Each year the island that is currently over the hot spot (Hawaii) adds new land. There is even another island being formed that should reach above the surface of the ocean in 10,000 to 100,000 more years. Another example of a slow constructive force is the deposition of sediment at the mouth of a river. Water carries sediment down river and as the river becomes more shallow, the sediment is deposited, forming landforms such as deltas. Mountains are also an example of a slow constructive force due to two tectonic plates being pushed into each other.
Destructive Forces :-
Destructive forces break down land. The two main forces that break down land slowly are weathering and erosion. Weathering is the breaking down of rocks due to forces such as wind and water. The pieces of rock are then moved elsewhere through the process of erosion. Weathering and erosion take millions of years to have an effect on the Earth, but those effects can be dramatic. The Grand Canyon and Monument Valley in Arizona are excellent examples of weathering and erosion.