Limestone.
It is a sedimentary rock composed of calcite and aragonite. It is used as a building material mainly because it is easily available and easy to work with.
Limestone is used in the manufacture of steel as it is the primary raw material that helps to remove impurities from the iron ore and produces waste matter that has low melting point and viscosity
Answer:
Comparing DNA
Explanation:
Darwin could compare only the anatomy and embryos of living things. Today, scientists can compare their DNA. Similar DNA sequences are the strongest evidence for evolution from a common ancestor.
Extinction refers to the eradication of an entire Species. Hope this helped!
Since the main food source for the crocodiles from the group B is fish, overharvesting of fish will have a negative impact on Group B.
Overharvesting of fish or overfishing can usually have serious consequences on aquatic ecosystems, including organisms such as crocodile in this example. Overfishing results not only in affecting the balance of life in the oceans, but also of the coastal communities who depend on fish for their way of life.
Cells get raw materials- including water, oxygen, minerals and other nutrients from the foods you eat. They let in raw materials through the cell membrane: the thin, elastic structure that forms the border of each cell.
