In performing an immunological procedure, you add 2 ml of stock serum to 8
ml of saline. two 1/4 serial dilutions are then made. what is the dilution of
serum contained in the final tube?

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

What is the name of the enzyme that forms at the start of transcription?