Gold is better, more valuable and silver is more common and less expensive
Answer:
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Explanation:
corundum, quartz, calcite, gypsum
Explanation:
The order of arrangement of minerals according to the moh's scale of hardness from hardest to softest is corundum, quartz, calcite, gypsum.
The moh's scale of hardness lists minerals in the order of their hardness.
Hardness is the resistance of a body or mineral to breakage. It is one of the physical properties used to identify substances.
The softest mineral according to the scale is talc and the hardest is gypsum.
- Talc
- gypsum
- calcite
- fluorite
- apatite
- orthoclase
- quartz
- topaz
- corundum
- diamond
The numbers indicates increasing order of hardness of the minerals.
We see that the order corundum, quartz, calcite, gypsum shows a decreasing hardness order.
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What can be inferred from this excerpt is : ( D ) Individuals with favorable variations survive and reproduce.
<h3>Effects of genetic variations in species</h3>
When the insecticide was sprayed some of the cockroaches survived and continued reproduction due to their resistance to the spray.Therefore it can inferred that although the cockroaches share the same genetic materials, the variations in individuals within the same specie played a role in the survival of some of the cockroaches.
Hence we can conclude Individuals with favorable variations survive and reproduce.
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Answer:
Hawks
Explanation:
As you go up in the trophic levels, energy is converted into heat energy. I recommend that you read about the 10% rule