Because of the 7 billion people that live on this earth :)
The answer is T-cells.
T-cells (T-lymphocytes) have a central place in cell-mediated immunity. On the surface of T-cells, T-cell receptor is present. When T-cell binds to the antigen via antigen receptor, the recognition occurs. Therefore, T cells act as a bridge between the cellular and humoral (antigen) response.
The musicians process the melodies and the lyrics while listening to the operatic solos in the different areas of the brain. The neural network of the brain is quite complex, and the different activities follow different neural pathways. In the listening of the operatic solos, the lyrics and the melodies of the song are processed in the different part of the brain, and hence, different neural networks function during this processing.
Hence, the blank can be filled with 'neural networks'.
Answer:
The applications are:
Explanation:
1;To increase the number of cells in the body
2;To ensure that human being have the same number of chromosomes in each generation through meiosis
3;To ensure growing h and development in human body since it increases the number of cells in the body
