Major crops are important in Brazil because it is one of the largest producers and exporters of these crops. If this helped in anyway a brainliest would be appreciated.
Answer:
C). Corundum
Explanation:
Corundum is a crystalline type of aluminum oxide that usually contains iron, titanium, vanadium and chromium traces. Corundum is an incredibly durable and hard material. It is the third hardest mineral, after moissanite and diamond.
A geologist determine that a sample of a mineral can’t be scratched by a steel naill but can be scratched by a Masonary drill bit. Based on this information, the sample mineral has to be softer than CORUNDUM.
Due to Corundum's hardness , it can scratch almost every other mineral, and Since corundum is harder than the drill bit of masonry that can smash the mineral sample and thus the mineral sample must be softer than corundum.
Alluvial soil can be found along the banks of the nile rivers
Question is incomplete. (Choices were missing)
<u>Complete question:</u>
In addition to certain types of minerals, Curiosity was designed to find a certain class of materials in the rocks. Although not necessarily an indicator of life itself, what type of materials that are important for life (or could even be the products of life) is Curiosity equipped to find in the rocks?
Group of answer choices
1.Organic materials
2.Cryptocrystalline materials
3.Inorganic materials
4.Superconducting materials
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<u>Answer:</u>
Organic material
<u>Explanation:</u>
Organic material consist of a whole series of product which ranges from the undecomposed plant and animal tissues. It basically refers to material which has hydrogen -carbon bonds as essential structures. As we all know Carbon is the element which is fundamental to life.
Organic material is basically a reservoir of nutrients that can be released in the soil.
Apart from this certain other elements such as:
- Hydrogen
- nitrogen
- Sulphur etc
are also needed to produce organic material. So if such materials are found, they potentially indicate towards life.
Hence, the correct answer is organic material.
