When the cold, sinking plate pulls the crust behind it downward are often a result.

earthquakes

volacanoes

eruptions

cracks

Earthquakes

Explanation:

Earthquake is a disturbance within the earth that is of great magnitude. It is often as a result of sudden burst or release of energy. The energy is propagated in form of seismic waves within the earth.

When cold plates begins to sink deep into the asthenosphere where they are melted, the pull downward can cause a disturbance in the surrounding area. The pull will cause a drag on rocks attached nearby leading to a severance/breakage. This can lead to massive disturbance and cause earthquakes to be induced.

A pull of this type is usually associated with areas around a convergent margin.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

just did the assignment and the answer was #1 +2 n