Questions: In 5-6 sentences, describe the characteristics of Earth's crust. Write your answer in the space below.

The Earth's crust is the outermost layer of our planet, characterized by its solid and rigid nature. It is composed primarily of a variety of rocks and minerals, including silicates such as quartz and feldspar. The crust is divided into two types: the continental crust, which is thicker and less dense, and the oceanic crust, which is thinner and denser. The thickness of the crust varies, ranging from about 5 kilometers under the oceans to up to 70 kilometers under continental mountain ranges. The crust is also the layer where tectonic activity occurs, leading to phenomena such as earthquakes and volcanic eruptions. This layer is crucial for supporting life, as it contains soil and nutrients necessary for plant growth.