Pollution
combustion tax
no.
**Undesirable and unwanted change in the physical,chemical or biological characteristics of our environment i.e.,air,water and soil(land),that may or will adversely affect humans or other species of our biosphere directly or indirectly. **Pollution is contamination by a chemical or other agent that renders part of the environment unfit for intended or desired use. **Pollution is the contamination of earth's environment that contaminates and interferes with human health and ecosystem functioning.
its not contanination -its contamination .-Contamination is the presence of a minor and unwanted constituent (contaminant) in material, physical body, natural environment, at a workplace, etc.-------according to wikipedia-contamination is discontinuation of purity of something by outside agencies------------according to me.
Commercial, conventional production controls undesirable insects through the use of chemicals. Organic production tries to control them by mechanical, cultural, botanical and organic spray, and biological means. For example, biological controls involve the introduction, or encouragement, of natural enemies in the environment that's being ravaged by the undesirable insect. These enemies are predators, and their prey is the undesirable insect. The predators also are called beneficial insects, for the benefit that they bring of an environment that's back in balance. One of the best known of the predatory, beneficial insects is the ladybug, who is the voracious biological control to the most undesrable aphid.
an undesirable in your garden is a weeg
Rain is desirable as it provides water for plants, replenishes groundwater, and helps to cool down the environment. However, it can be undesirable when it leads to flooding, landslides, and disruptions to transportation and outdoor activities. The desirability of rain often depends on the amount and timing of the rainfall.
they are undesirable and they shouldn't get their books published......
The undesirable results were caused by the temperature and humidity. The parents considered the match to be undesirable and wanted him to leave.
An example of undesirable friction is when a cyclists falls and his face against pavement that skin on the road. Undesirable friction is something that is not controllable.
"What are the undesirable and unwanted effects in the medium?
Pollutants, or pollution.