Answer: 1 - Convergent Continental-Continental boundary
2 - Convergent Oceanic-Oceanic boundary
3 - Convergent Oceanic-Continental boundary
Explanation:
When two continental plates collides, then sandwich pattern takes place, forming the great Himalaya. For example, the formation of the Himalaya due to the collision between Eurasian plate and the Indo-Australian plate.
When two oceanic plates collides, it creates a subduction zone and volcanic island arcs are created. For example, the Mariana island.
When an oceanic plate collides with a continental plate, the denser oceanic plate gets subducted beneath the less denser continental plate, forming the continental volcanic arcs. For example, the San Andes mountain.
Thus, the correct answers to the given questions are mentioned above.
