Hello detective doge here i am kinda bored wondering if anyone has any detective work for me

Look at the bean data from days 4–6. use these data to explain how natural selection changed the number of dark red walking beans over time. writing part

Express the following number in scientific notation. 0.026890 =

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution