The staff changes their staff because they have done everything they have to make the good food they
Answer – C (Preventing human development)
National parks are mainly established by national governments for conservation purposes, particularly the conservation of 'wild life' for future generations and as an emblem of national pride. National parks reduce the human impact on land by preventing human development.
Cells use the proteins called receptors which can bind the signaling molecules and initiate a physiological response with the other cells.
<u>Explanation:</u>
- The cell to cell interaction is also known as Cellular interaction. The cells that can communicate with each other in three ways Gap junctions, Tight Junctions, desmosomes.
- The signaling of cells allows communicating with adjacent cells and distant cells.
- Ligand binding to the receptor allows for signal transduction in the cell. To terminate the ligand will be removed from the access with the receptor.