Adaptation for hiding and the birds’ migration
Camouflage is the ability of some living organisms to be hidden from their enemies or to capture the preys of the predatory species.
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The description of the modern periodic table
The modern periodic table consists of 7 horizontal periods and 16 vertical groups (18 vertical columns). The elements of the modern periodic table are classified into 4 blocks (s, p, d, and f).
Adaptation in the aquatic submerged plants and what plants are underwater?
Aquatic plants are divided into the totally submerged in the water as Elodea plant and the partially submerged in the water as Hyacinth (Nil rose). Aquatic plants are exposed (especially the totally submerged ones)...
Metalloids and the difference between the positive ion and negative ion
The metalloids The metalloids are semi-metallic elements that have the properties of both metals and nonmetals, It is difficult to know the metalloids from their outermost electrons due to the difference in the numbers...
