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On Average,how Many Words Does an 18-Month-Old Toddler Know

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On average,how many words does an 18-month-old toddler know?


Definitions:

Polar (Hydrophilic) Region

A part of a molecule that has a tendency to interact with water through hydrogen bonding or electrostatic interaction, making it soluble in water.

Plasma Membrane

The lipid bilayer that surrounds a cell, providing a barrier and regulating the movement of substances in and out of the cell.

Phospholipids

A class of lipids that are a major component of all cell membranes, forming bilayers that act as a barrier in cells.

Phosphorus

A chemical element with symbol P and atomic number 15, essential for life, involved in the formation of DNA and RNA, and a key component of ATP, the energy currency of cells.

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