Juan is studying fossils. His teacher wrote the following statements on the board and asked the students to put them in the corr
ect order to describe how fossils are formed. 1. Minerals seep into the organism’s body and replace it with stone. 2. The organism completely decomposes, leaving behind an imprint. 3. An organism dies and its body is covered with a layer of sediment. 4. Time passes, and sediment layers continue to build up on the organism.Which is the correct order of events for fossil formation?
The precise definition of pH is "the negative common logarithm of the activity of hydrogen ion in solution". For practical purposes, the activity is approximated as concentration in moles/L: pH = - log 10 ([H+]) .
