Arrange the events to describe how a volcano forms and erupts. arrange the events to describe how a volcano forms and erupts.
tiles;
the plates move constantly.
molten magma flowing beneath
earth's surface finds its way
out of the gaps.
the mound cools down over
thousands of years to form
a mountain.
the heap grows bigger and bigger
as the volcano erupts, creating a
huge mound.
at times, the plates move away
from each other, creating gaps.
earth's crust is made up of huge
slabs called plates.
magma comes out of earth, creating
a heap of lava, ash, and rocks.
sequence

Suggest two reasons why irrigation is important for human development of the desert (4 marks)

Look at the data above. provide an explanation for europe’s projected population decrease by the year 2050. (i'm doing this for future kids) the answer is : the percentage of people over the age of 65 and under the age of 15 in europe is currently the same at 16% each. therefore, the majority of the population is between the ages of 16 and 64. in forty years from now, in 2050, a greater percentage of the population will be over the age of 65. europe also has a relatively long life expectancy of 75 years. this, combined with a low birth rate means that by 2050 europe’s population will actually be less than it is today.

What did the pattern of earthquakes in the wadati-benioff seafloor zones show scientists? a.) earthquakes occur where the ocean floor reaches its highest temperatures. b.) many earthquakes take place 700 kilometers below the seafloor. c.) slabs of ocean floor return to the mantle in subduction zones. d.) ocean - trenches cause earthquakes.