Types of samples.. Not hardly any change in the characteristics of a sample fish in the aquarium. Change in some of the properties

1 - Type I, which does not hardly any change in the characteristics of a sample fish in the aquarium.

2 - The second type, which is hardly some change in some of the properties, as a result of gravity or its rarity or difficulty keep it for a long time or for bad system that has wrought in the classroom, as a sample for a snake or a scorpion, for example.