Answer:

1. Asses - to evaluate or judge the nature or ability of something or someone.

2. Contaminate - to expose someone or something to substances that can cause harm or pollution.

3. Crucial - important

4. Discard - to throw someone or something away because it is no longer useful.

5. Double-bagged - to bag something twice or more times as to avoid contamination. This method is used by hospitals.

6. Fuse - to combine

7. Potential - having the capacity to develop something (abilities, diseases, etc.) or become something else that can affect the future.

8. Respiratory - relates to respiration.