Answer:
4. Feldspar, quartz and silicates.
Explanation:
1. Feldspar: This group consists of aluminium silicates of potassium, lime or soda. It's the most liberal mineral group of planet Earth. It is found in rocks, soils and clays. This group contains orthoclase, microcline and plagioclase sandstone.
2. Quartz: it's a chemical compound and it consists of one part of the silicon and two parts of oxygen. It is known for its variety of usefulness and it's the second most liberal mineral that exists on planet Earth. It's very resistant to any kind of weather and temperature whether it's extremely hot or cold, making it very important in many usages.
3. Silicates: being made of silicates groups, they are the largest class of minerals, taking up roughly 90% of the whole Earth's crust. The crust of planet Earth is being maintained by many processes, some of them are: melting, metamorphism, weather and crystallization.
Answer:
India is located in the bottom half of Asia, which is a continent.
Explanation:
Answer:
Ordovician extinction
.
Explanation:
The Ordovician extinction was an event that occurred around 450 million years ago and caused the <u>disappearance of 60% of marine species.</u>
This event was caused by global cooling which resulted in the <u>drop of the sea level</u>. This change mostly affected the species that developed life in the deep, depriving them of their natural habitat.
C is correct.
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Explain:
