Answer:
PCBs and DDT are chemicals that were banned more than 30 years ago, but our air, water, land, and bodies are so contaminated that decades of cleanup efforts have yet to eliminate their threats to our health. Today, food is one of the most likely exposure routes to PCBs.
Answer:
temperature and whether they are polar or non-polar
Explanation:
I’m pretty sure it’s water, oxygen, and food. beacuse food provided both nutrients and an energy source.