Biochemical sedimentary rocks are sedimentary rocks created by the buildup of organic carbon (dead plant debris) in low-oxygen conditions (such as swamps).
When organisms utilize elements dissolved in air or water to develop their tissue, biochemical sedimentary rocks form. The calcareous skeletons of creatures such as corals, mollusks, and foraminifera are used to make most varieties of limestone.
Shells and bodies of submerged creatures are used to build biochemical sedimentary rocks. Chemical components from the water are extracted by living creatures and used to form shells and other body parts. Aragonite, a mineral related to and usually replaced by calcite, and silica are among the constituents.
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Answer:
C. better tools for agriculture
Explanation:
- Sumera were the first people, to migrate to Mesopotamia and created a great civilization along the 5500 million years they build the settlements along the river valleys. They had advanced levels of technology such as irrigation techniques.
Ammonia belongs to a family of base because it is in basic nature
Answer:
carved masks , griots , murals
Explanation:
D I'd say you should go for
