The most unreliable variable in diagnosing the property
minerals such as quartz is their color as it is not consistent with the use of
such external factors. The color could change, that is why it is considered to
be unreliable in diagnosing some of the minerals.
I need help on that one 2
Answer:
Well you didn't provide answer choices, but the exact value is -3±2√5.
Answer: pre-colombian indian populations belong (major part) to the linguistic group of tupi-guarani (not totally extinct). In 1500 they lived in the paleolithic phase of their history. They practiced fishing, hunting bigger animals, some of them knew primitive forms of agriculture.
Explanation:
