Stem cells in human bone marrow divide and differentiate to form various a) neurons. b) hormones. c) osteocytes. d) blood cells.

The correct answer is D) Blood cells.

Haematopoiesis is the process by which cellular components of the blood are formed from multi-potent  haematopoetic stem cells.

In developing embryo, formation of blood cells can take place in spleen, liver and lymph nodes but it takes place in bone morrow once it is completely developed.

However, maturation and activation of some lymphocytes can take place in different organs such as  thymus, spleen, and lymph nodes.

Haematopoetic stem cells divide and differentiate into myeloid and lymphoid progenitor cells which further divide and differentiate into various types of blood cells (RBC, lymphocytes and myeloid cells).

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

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