Comprehension:
In the following passage, some words have been deleted. Select the most appropriate option for each blank.

Most of our (1)_______ is made up of rocks and minerals. Over millions of years, they develop deep within the earth. There are many different shapes, textures, and colors of rocks. They are mined for many of our everyday necessities. To put it succinctly, a rock is thought to be a solid (2) _______ of minerals and their grains, which either grow together or are cemented together. We (3)_____ that there are large and small rocks on earth. Over time, rocks undergo many changes. Weathering, heating, and cooling are the causes of these changes. The term "rock cycle" refers to this pattern of change.
The rock cycle is an essential idea in topography that depicts changes through geologic time. The representation of time based on the earth's rock record is (4)_____ to as geologic time. Among the three primary types of rocks: igneous, metamorphic, and sedimentary. When rock types are pushed out of their natural (5)___ , they change. Because of the main thrusts of the rock cycle, plate tectonics and the water cycle, rocks don't stay in balance and change as they experience new conditions. Earth's internal heating and the hydrological cycle are the two forces that drive the rock cycle.
SubQuestion No : 71
Select the most appropriate word for blank no. 1.