Question

FILL IN THE BLANKS
1. Coal is obtained from underground___________
2.
___________is formed by the metamorphosis of limestone.
3.
_____________are used for extracting metals like copper, gold, silver and iron.
4. ______________is formed by the decomposition of matter both animal and
vegetable.​

Answer 1

1. mining

2. marble

3. mines

4. coal

Answer 2

Explanation:

Coal can be extracted from the earth either by surface mining or underground mining. Once coal has been extracted, it can be used directly (for heating and industrial processes) or to fuel power plants for electricity. If coal is less than 61 meters (200 feet) underground, it can be extracted through surface mining. hope you enjoys plesae marks as