Sediment cores measured for containment levels have the highest levels of PCB's from the early 1960's. True or false
I think this is true? right? Help
Yes, it is true in most cases. An examp-le is shown at
http://pubs.usgs.gov/circ/circ1171/html/cores.htm
The reason is that PCB bans and restrictions on disposal began to take effect in the late 1960's.
To verify this information, you can follow these steps:
1. Search for scientific studies or reports on sediment cores and PCB levels.
2. Look for reputable sources such as research papers, government agencies, or scientific journals.
3. Read the studies or reports to find information about the highest levels of PCBs in sediment cores.
4. Pay attention to the timeframe mentioned in the studies to determine if the highest levels of PCBs are indeed from the early 1960s.
By following these steps, you can verify and confirm whether the statement is true or false.