Which of the following is a correct comparison of a glacier and a volcano?

a glacier is a constructive force and a volcano is not a constructive force.
a volcano is a constructive force and a volcano is not a constructive force.
both glaciers and volcanos are constructive forces.
neither glaciers nor volcanos are constructive forces.

A volcano is constructive force and a glacier is not.

Explanation:

Volcanoes are formed when molten magma reaches the earth surface to form volcanic rocks. Volcanoes brings materials from deep within the earth to the surface. It adds earth materials to the already existing ones. Volcanism is a building process and it was very instrumental to the early formation of the earth. It is still very much important. Some gases are also released into the atmosphere through volcanic processes.

Glaciers are destructive forces. The erosive power of moving glaciers wears and sculpts the surface. Glaciers carry sediments within them and release them when they melt. They can carry very fine particles to large ones within them. Glaciers are very powerful denudation agents in polar, temperate and mountaineous regions of the world.

Some sediment in glaciers can reach far deep into the oceans as they can be carried in ice bergs.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.

an economic of depression