Answer:
A constructive plate boundary is when two plates move away from each other, causing molten material from the Earth’s mantle to rise up and form new crust between them. This type of boundary is responsible for the formation of new land due to the movements of the plates. An example of a constructive plate boundary is the Mid-Atlantic Ridge which is located between the North American and Eurasian plates. As these two plates move away from each other, magma from the mantle rises up and creates new oceanic crust, resulting in the formation of new land masses in the form of islands.