Red blood cells, skin cells, and nerve cells in your body all have different, specialized functions. they contain the same genes, so what genetically has caused them to look so different and have such different functions?

The fertilization happens in our body with single cell and our body is form with same set of gene but with starting with single set of fertilized egg.

Explanation:

It reached to trillions of eggs. So, it is not possible to look same. The same thing happens with red blood cells, skin cells and nerve cells. Their size is different according to their work.

In our body the structure of all cell is totally different. Each and every cell is responsible for different work. Their size is according to their suitability of their job. For example, nerve cells are long because it helps to send the signals.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.