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Gelneren [198K]
3 years ago
8

The nine different classes of vertebrates include

Biology
1 answer:
slavikrds [6]3 years ago
7 0
The nine different classes of the vertebrates,
-mammals
-birds
-reptiles
-amphibians
-ray finned fish 
-lobe finned fish
-lampreys
-hagfishes
-sharks,skates, ray, ratfishes 
Please tell me if you would like the scientific names, thank you!
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3 years ago
Distinguish between the characteristics of an unweathered rock and those of a highly weathered rock.
Pavel [41]

Answer:

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Highly withered and unwithered rock can be distinguished by following characteristics:

1. Physical structure: There will be no change in the structure of unwithered rock but structure of highly withered rock will change after the withering process.

2. Chemical composition: The withering process will remove surface and internal minerals present in rock. In unwithered rock the surface and internal mineral composition will remain unchanged but in highly withered rock the surface and internal minerals present in rock will be removed, which change the overall chemical composition of the rock.

4 0
3 years ago
Read 2 more answers
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