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daser333 [38]
3 years ago
6

An extraordinarily beautiful purple - blue gemstone (typically found in only one country in Africa), with a hardness close to or

less than 7.0 that is often formed by heat treatment of a brownish or greyish silicate mineral is a gem variety of
1) zoisite
2) cordierite
3) thulite
4) tourmaline
5) feldspar
Geography
1 answer:
storchak [24]3 years ago
5 0

Answer:

4) tourmaline

Explanation:

  • It is a gemstone that is found on the African continents and is made pos the silica materials and has compounds of the aluminum and iron and the potassium lithium and the sodium and this is classified as a semi-precious stone. The metamorphic rocks and the sandstone consists of these minerals and the colors of the gemstone cane alter by the heat treatment.
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Katen [24]

Answer:

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2. Groundwater.  --  Precipitation that infiltrates Earth's surface and percolates downward becomes .

3. Lake. --  A is a large body of water that has extensive areas of open water, some of which is too deep for photosynthetic life.

4. River  -- A meanders across land and structures the landscape.

5. Watershed.  -- A is the entire land area that supplies a river or stream with water from precipitation.

6. Wetlands --  A has water-saturated soil, shallow standing water, and ample vegetation.

Explanation:

  • The surface water is the water the is formed over the surface of the earth and moany in the form of the rainfall. The groundwater is water the is found in the aquifer and is said to unsaturated and saturated as related to the water table.  
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3 years ago
True or false. The subcontinent of India was once part of the supercontinent Gondwana.
Pavel [41]
Yes, this is true.

All the parts (in terms of modern geography) of Gondwana were: <span><span><span>Africa, South America (you can see that they were connected due to the similarity of their shapes), Australia,India, Arabia, Antarctica, the Balkan Peninsula (today part of Europe) </span></span><span><span /></span></span>
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What is a specific example of a current discourse on the human-nature relationship.
mrs_skeptik [129]

Answer:

<u>Current discourses on man dna environmental relationships</u>.

Explanation:

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The answer to this is D.
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