Scientists can use the color of minerals to tell them apart.
Idiochromatic minerals <em>(self-colored) </em>due to their composition. The color is constant and predictable.
Allochromatic minerals <em>(other colored) </em>due to trace impurities or defects in their structure. The color is variable and unpredictable.
Pseudochromatic minerals <em>(false colored)</em> due to effects produced by light. The color is variable but a unique property of the mineral.
Answer:
Passage of the Northwest Ordinance!
Explanation:
B! B! B!
(If this is wrong I will change it to the correct Answer)
Explanation:
Piaget believed that through <em><u>pretending</u></em>, young children practice and strengthen newly acquired representational schemes.
The answer is C, Fun And Adventure
Answer:
Read this excerpt from Robert Stawell Ball’s Great Astronomers: Though every child may now know more of the actual truths of the celestial motions than ever Ptolemy knew, yet the fact that his work exercised such an astonishing effect on the human intellect for some sixty generations, shows that it must have been an extraordinary production. We must look into the career of this wonderful man to discover wherein lay the secret of that marvellous success which made him the unchallenged instructor of the human race for such a protracted period. Based on the context of the excerpt, what does the word protracted most clearly mean? seeming to be truthful weighing an excessive amount extending in a specific direction continuing for a long time being exceptional or talented
