Abstract
People are aware of periods of severe air pollution when visibility is poor, eyes burn, and nasal passages and throats are irritated. Plants also are affected by toxic substances in the atmosphere. In most cases specific, recognizable evidence of damage is produced on plants at pollution levels lower than those required to produce symptoms in humans; therefore plants can serve as a warning that pollution levels are approaching dangerous concentrations. Only in recent years have we become fully aware of the plant-damaging potential of many pollutants. Major pollutants often implicated are ozone, sulfur dioxide and hydrogen fluoride.
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Claims 3
Claim · model-written summary
specific, recognizable evidence of damage is produced on plants at pollution levels lower than those required to produce symptoms in humans
- Taxon
- plantsViridiplantaee0
- Outcome
- evidence of damagee0
- Direction
- lowere0
- Comparator
- symptoms in humanse0
Verbatim
e0“specific, recognizable evidence of damage is produced on plants at pollution levels lower than those required to produce symptoms in humans”
Claim · model-written summary
plants can serve as a warning that pollution levels are approaching dangerous concentrations
- Taxon
- plantsViridiplantaee0
- Outcome
- warning that pollution levels are approaching dangerous concentrationse0
Verbatim
e0“plants can serve as a warning that pollution levels are approaching dangerous concentrations”
Claim · model-written summary
Major pollutants often implicated are ozone, sulfur dioxide and hydrogen fluoride
- Taxon
- PlantsViridiplantaet0
- Compound
- ozone, sulfur dioxide and hydrogen fluoridee0
- Outcome
- pollutantse0
Verbatim
e0“Major pollutants often implicated are ozone, sulfur dioxide and hydrogen fluoride”
t0“Plants also are affected by toxic substances in the atmosphere.”