The major rocks of Earth's crust are classified into three principal types based on their origin and appearance. Rocks in pure terms of geology can be defined as naturally occurring and coherent aggregate of one or more minerals.
Rocks are commonly divided into three major classes according to the processes that resulted in their formation. These three classes are-
- Igneous Rocks: Igneous rocks are those which have been formed from molten lava
- Sedimentary Rocks: Sedimentary rocks consists of fragments derived from preexisting rocks or of materials precipitated from solutions.
- Metamorphic Rocks: Metamorphic rocks are those that have been derived from either igneous or sedimentary rocks under conditions that caused changes naturally and over time.
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Answer:
because of pollution which causes death of many organisms which made them go extinct
Answer:
The Koppen climate classification system is based on design of the botanist an is based on the type of the vegetation gown in different regions.
Explanation:
- The Köppens climatic classification system is based on the five major class and groups, them with each of them being based on the seasonal rainfall and the temperature patterns of the places.
- These five groups are then as A (tropical), B as (dry), the C as (temperate), the D as (continental), and the E as (polar).
- Each group and subgroup is shown by a letter that symbolizes them. His classification has been further modified by the Trewartha climatic classification of the 1960's.
Basal sliding phenomenon helps glaciers move down the valleys of the southern Alps. Basal sliding is the action of the glacier moving down across the bed because of the melting of water below the ice moving as the lubricant.
