Question

Which of these terms is related to environmental pollution?

• A. Pollutants
• B. Biological agents
• C. Sink
• D. All of these

Answer 1

The correct option is D All of these

1. A pollutant is a substance that pollutes something, especially water or the atmosphere.
2. A biological agent—also called bio-agent, biological threat agent, biological warfare agent, biological weapon, or bioweapon—is a bacterium, virus, protozoan, parasite, or fungus that can be used purposefully as a weapon in bioterrorism or biological warfare (BW).
3. Sinks are a fundamental factor in the ongoing balance which determines the concentration of every greenhouse gas in the atmosphere.