Ok, so I am working on a project where I have to make a tax for manufacturers using non recyclable materials. So for this tax you multiply the weight (in kg) by how toxic the material is, this gives you an answer in pence. So I have a list of heavy metals that are dangerous to the environment but I don't know what one is the most toxic and the least toxic.
This is what I think the order from most dangerous to least dangerous is:
- Selenium (most harmful to the environment)
- Zinc (least harmful to the environment)
Could someone please share their opinion on this order and suggest a better order. Also could someone suggest a suitable number to multiply the weight by to get price in pence.