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definitions henry
science def.
Question | Answer |
---|---|
ozone layer | layer of ozone O3 in the atmosphere 15-50 km above earth's surface to protect from uv rays |
monitoring | keep track of something |
invertebrates | animals without backbones |
parts per million | ppm 0.001=1000000 |
spring acid shock | sudden drop of ph |
toxic | poisonous |
toxicity | how poisonous a substance is |
toxins | poison |
ld 50 | lethal dose 50 |
heavy metals | 6 poisonous metals copper zinc lead etc. |
sulfur dioxide | forms when sulfur combines with oxygen in the air |
nitrogen oxides | a major air pollutant |
global warming | breaking down of the ozone layer |