Each cell in the human body contains about 25,000 to 35,000 genes.
For your first question i think why are roses the best flowers
For your second question it is defeinitley what causes people to be clolor-blind
Many different ways, primarily through bone and muscle loss. The lack of pressure on bones causes the body to reabsorb calcium from them, weakening them and potentially causing kidney stones.
The access is most heavily limited by Climate
In an extremely dry and hot climates such as desert, it will be incredibly hard to access potable water because they evaporate really quickly
Meanwhile in a wet and cool climates such as rain forest, it will be extremely easy to access potable water
