● High-level waste (HLW) is waste that gives off large amounts of ionizing radiation for a long time.
● Low-level waste (LLW) is waste that gives off small amounts of ionizing radiation for a short time.
● Antibiotic resistance occurs when microorganisms become resistant to antibacterials.

● Description of the environmental impact of medical nuclear waste disposal.
● Discussion of environmental issues related to left-over solvents.
● Explanation of the dangers of antibiotic waste, from improper drug disposal and animal waste, and the development of antibiotic resistance.
● Discussion of the basics of Green Chemistry (sustainable chemistry) processes.
● Explanation of how Green Chemistry was used to develop the precursor for Tamifl u (oseltamivir).

​Guidance
The structure of oseltamivir is provided in the IB data booklet in section 37.