How do volcanoes contribute to the formation of new landform?

They help form rocks which help give us the knoledge

When the volcano erupts and when the magma or lava cools down it forms to rock and then primary succession occurs first, after the rock breaks over time dirt comes and then,licken or moss the organism that breaks the rock appears after the grass or weeds come and then bushes appear and then the little trees grow and finally, a big population of trees appears.

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city.