Answer:
B.) Scrubbers
Explanation:
Scrubbers are used to remove poisonous gases from industrial emissions before they are released into the atmosphere.
These devices are air pollution control units in industrial power plants that uses liquids to absorb harmful gaseous industrial gases.
- Some of these gases are carbon monoxide, nitrogen oxides.
- This atomized liquid removes harmful gases
- The waste gas is brought into close contact with the liquid.
- Some of the gases will pass into the liquid.
- They are very effective in removing polluting gases from wastes.
Answer:
541 million years ago with the Cambrian explosion, an extraordinary diversification of marine animals, and ended about 252 million years ago with the end-Permian extinction, the greatest extinction event in Earth history.
source- Britannica
Explanation:
Answer:
smog
Explanation:
Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.
Answer: The given statement is True.
Food chain can be described as the sequence of transfer of energy and matter among different organisms present within an ecosystem.
It starts with producers ( occupying the first trophic level), which are consumed by consumers in a successive manner ( primary consumer→ secondary consumers→ tertiary consumer or decomposers).
Therefore, producers are beginning link in a food chain whereas decomposers occupy the last level in a food chain.
