Read the passage Which key detail is most important for understanding
the central idea of the passage?
The fake red lava flowing from the model volcano is the
product of a chemical reaction. The chemical reaction
is created by combining baking soda and vinegar,
Carbon dioxide, which is also present in real volcanic
eruptions, is produced when baking soda and vinegar
mix. The release of this gas allows the mixture to
bubble up like lava in a volcano.
O The fake lava is red like real lava.
O Carbon dioxide is present in real volcanic eruptions.
O A chemical reaction allows the fake lava to flow from
the model volcano.
O Carbon dioxide is released when baking soda and
vinegar are mixed.

disequilibrium means that either supply is greater than the demand for an available good, or that the demand for a product outstrips the available supply. it implies that the price for a is either too low creating large demand, or too high creating a large surplus of supply.

b. great plains

hope this

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b

mount st. helens in washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. ash from the volcanic eruption fell as far away as minnesota. seismic activity at mount st. helens, which is 96 miles south of seattle, began on march 16.