Day and night is caused by the Earth's axis' rotation. The Earth is tilted about 23.5<span>º and every 12 hours or so, it changes every night.
Correct me if I read it wrong.</span>
The answer would be 1. original-tissue fossils and 2. many species were wiped out
Answer: Between 8 and 14
Explanation: Ammonia is an inorganic compound of formula NH₃. Also known as ammonium hydroxide, it behaves as a weak base.
pHydrion paper is a chemical test indicator, i.e., it indicates the pH of a substance.
If inserted in Ammonia, pHydrion will indicate a range of 8 to 14 because in pH scale, indication of base is over 8 and up to 14. The exact number depends on the hydrogen ion concentration of the substance.
