What are coarse particles (PM10) and how they are made ?A. Smoke, dirt and dust from factories, farming and roads are called coarse particles. They are made from crushing and grinding of rocks and soils.B. Toxic organic compound and heavy metals are called coarse particles. They are made from driving automobiles, burning plants and smelting and processing metals.Choose the correct codes from the given below

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What are coarse particles (PM10) and how they are made ?
A. Smoke, dirt and dust from factories, farming and roads are called coarse particles. They are made from crushing and grinding of rocks and soils.
B. Toxic organic compound and heavy metals are called coarse particles. They are made from driving automobiles, burning plants and smelting and processing metals.
Choose the correct codes from the given below

A only

B only

Both A and B

Neither A nor B

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Who developed Gaia Theory and when?
A. It is a theory compelling new way of understanding life in our planet.
B. This theory asserts that living organisms and their inorganic surroundings have evolved together as a single living system that greatly affects the chemistry and conditions of earths surface
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