Which are characteristics of natural selection? Select three options. Oit affects populations.
Oit affects only individuals.
Ult occurs when there is genetic variation.
Uit occurs when organisms are genetically identical.
Ut selects organisms with certain traits to survive.
Oit selects organisms at random to survive.
o09

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2