In the electron dot structure of Cl₂, two chlorine atoms share one pair of electrons, forming a single covalent bond to achieve stable electronic configurations.

Nitrogen, with an atomic number of 7, forms a diatomic molecule (N₂) with a triple bond. Each nitrogen atom contributes three electrons, leading to three shared pairs, forming a triple bond in the electron dot structure of N₂.

Different areas of association in the fore-brain interpret sensory information by combining inputs from various receptors and stored information, ultimately leading to the formation of decisions and responses.

The fore-brain serves as the main thinking part of the brain, specializing in receiving and interpreting sensory impulses from various receptors for hearing, smell, sight, and other senses.

Muscle cells change their shape and shorten at the cellular level by utilizing special proteins that respond to nervous electrical impulses, leading to new arrangements of proteins that result in the muscle cells adopting a shorter form.