Magma is molten rock that is underground and lava is molten rock that erupts out on the surface. The two main types of igneous rocks are plutonic rocks and volcanic rocks. Plutonic rocks are formed when magma cools and solidifies underground.

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Thus rocks are always changing form and are redistributted as part of a giant cycle of renewal. This cycle is called the Rock Cycle. Igneous Rocks: form by crystallizing melted material (magma). They can form either on the surface (extrusive igneous rocks), or deep in the crust (intrusive or plutonic igneous rocks).

Some other common extrusive igneous rocks are scoria, which is like basalt but has a lot more air bubbles trapped in the rock, and rhyolite a very light colored extrusive igneous rock. With intrusive igneous rocks the molten rock cools before it reaches the surface.

Recycling materials make an important contribution to the sustainable use of rocks and minerals. Most metals can be recovered and refined back to clean metals to be used by industries again. This uses less energy than processing the ores or concentrates to make metals.

Answer. Answer: As a student and still studying I can promote the sustainable development in utilizing these resources by Informing and educating my friends,colleagues,family to not waste these essential resources because they are used for buildings,cars,roads and appliances.

Some of the important measures for sustainable development are as follows:

• (i) Technology:
• (ii) Reduce, Reuse, and Recycle Approach:
• (iii) Promoting Environmental Education and Awareness:
• (iv) Resource Utilization as Per Carrying Capacity:
• (v) Improving Quality of Life Including Social, Cultural and Economic Dimensions: