干货分享 | AP环境科学全章节知识点总结AP环境科学全章节知识点全总结！不管你是想最后冲刺理清思路，还是想临时抱佛脚，都应该看看这篇！
Pollution
Dose-response analysis: expose to a toxin at different concentrations
High LD50 means low toxicity
Poison: LD50 of 50mg or less per kg of body weight
ED50: 50% shows negative effect
Threshold dose
Acute effect
Chronic effect
Infection: result of a pathogen
病菌
invading body
Pathogens
Viruses, bacteria, fungi, protozoa
原生动物
, parasitic worms
Vector: ticks spread spotted fever
Pollutants
Primary: CO
Secondary: acid rain (SO2+SO3+wat