Since the early 1990s, proton pump inhibitors (PPIs) have been widely used to treat acid reflux disease. Although clinical tests in the 1980s deemed PPIS to be safe for humans, in 2012 the FDA announced warnings that long-term use of PPIS could increase the risk of bone fractures, kidney disease, and some intestinal infections.

Which statement best explains why the safety of PPIS is now in question when clinical experiments in the 1980s provided evidence that they were safe?

this protocol provides a detailed procedure for total protein extraction for western blot analysis from achieved samples following trizol isolation of rna.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.

answer australia and antarctica;