Electronic components contain plethora of toxic materials in varying degrees that contribute directly to a disrupted ecosystem. The dangerous traces of methyl, cadmium, arsenic, mercury, Lead, Barium and Polybrominated Flame Retardants then seep into the soil, polluting the groundwater. If thrown in an inferno, the burnt cadmium along with other toxic substances can very well pollute the air. Many of the chemical compounds present in the electronics are cancerous in nature.
While burning the components is a major part of it, the polluted air isn’t just caused by them. In fact, just throwing them into the trash can lead to the poor air quality.
Improper disposal of waste will also cause harm to animals & marine ecosystem since they rely on the environment to survive. High levels of certain minerals and metals can also stunt or kill plants, disturbing the local ecosphere dramatically.