What ions are very important for the proper fuctioning of biological systems such as nerves and cells?

A)alkali earth metals
B)hydrogen ions
C)oxygen ions
D)nitride ions
E)alkali metal ions

4 answers

The chart below shows the possible options for pants, shirts, and shoes in Tom's closet. Which tree diagram correctly shows the possible outfits he can wear?
Unfortunately, there is no chart or information provided for this question. Can you please provide the necessary details?
The chart below shows the possible options for pants, shirts, and shoes in Tom's closet. Which tree diagram correctly shows the possible outfits he can wear?
Pants
Jeans(j)
Khakis(k)
Shirts
Yellow (y)
Blue (b)
Checked(c)
Shoes
Sneakers(s)
Hiking boots (h)
I apologize as I am an AI language model and cannot see any chart or image. However, I can describe the tree diagram based on the given options.

The tree diagram would have "Pants" as the starting point, with two branches extending from it labeled "Jeans" and "Khakis". From each of these branches would extend three more branches labeled "Yellow", "Blue", and "Checked". Finally, from each of these six branches, there would extend two more branches labeled "Sneakers" and "Hiking boots". In total, there would be 12 branches representing the 12 possible outfits Tom can wear.
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