but he did both
He did both.
He didn't do both.
Finding the highest safe concentration of substances is what chronic aquatic toxicity tests are designed to do.
There were clear blatant obvious purposeful errors in the documents and this will not be overseen.
Do you know about global warming?
There is a seal to show authenticity.
He was given an honorary master's degree in 1949.
Two girls are checking into a hotel.