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Answer:
Option B. compounds
Explanation:
Compound is a type pure substance which is formed when two or more than two elements combine together chemically in a fixed ratio. It is represented by a chemical formula. Chemically combine means the elements present in the compound make bonds in order to hold each other. So they are not separated by physical methods. It is separated from one another by chemical methods.
The asthenosphere lies 80-200km below the surface under the lithosphere. Convection also occurs in the asthenosphere. The asthenosphere is mostly made of up rock material (magnesium and iron silicates). The asthenosphere makes up 6% of the mantle and lets the lithosphere move.
Best of Luck!
Answer:
The correct option is C) Application of toxic fertilizers to crops
Explanation:
Toxic fertilizers are one the main causes which result in water pollution. Due to certain conditions such as flooding, the toxic fertilizers gets drained away into nearby lakes and seas. These toxic fertilizers pollute the water and kill many of the aquatic species living in the lakes or rivers. As a result, the polluted water affects human health when such a water is used for irrigation and consumption needs by the humans.
