Some samples are transparent, or very difficult to see, therefore, they are stained in order to be seen more clearly and easier to work with.
During eye surgery, the clear layer of the eye is stained to be easily extracted, if it was clear then the surgeon might cut the eye instead of just the layer.
Hope this helps, u might want to search online for more info.
Parents with traditional gender schemas are especially likely to raise children who show signs of gender-typing. The term gender-typing defines the acquisition of a traditional masculine or feminine role. Example is a<span> boy who consistently exhibits traditionally masculine interests and behavior patterns.</span>
Solar, because they have mostly sunny days and very few clouds!