Which statement summarizes what has happened to life on the Galapagos Islands?

The biodiversity of the islands has increased.
The biodiversity of the islands has decreased.
The biodiversity of the islands has remained the same.
The biodiversity of the islands decreased, then increased

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.