Natural disaster
Where do Earthquake and volcano occur?
They occur on the divergent boundaries
Why does tectonic plates move ?
They are floating in the semi molten upper mantle just below them ?
What does it mean to pollute ?
To make something impure.
What percent of salt water is salt?
3.6%
What are the 3 major types of rocks?
Igneous, sedimentary, and metamorphic
What are the layers of the Earth?
Crust, upper mantle, lower mantle ,outer core, inner core.
What are convergent boundaries?
Two plates collided, one plate bends downward and melts in the mantle .
In what year did American fisherman adopt a British?
In 1905
How many people live within so miles from an ocean?
6.8 billion
Which is the most abundant chemical sediment?
Limestone