The answer is each indicator has a narrow range. We need many different indicators to span the entire ph spectrum because each indicator has a narrow range.
Answer:
Boron (B) Atomic Mass: 10.811
Explanation:
The number of protons and electrons are the same, always. You can find the atomic mass by looking at the periodic table for that atom: 10.811
True, if you would like an example look at Indian arrow heads or early architecture all use rocks.
Answer:
Exosphere
Explanation:
it is found at the end reaching outer space