Answer:
The reason an amoeba can easily change shape is because two thirds of the cell is composed of cytoplasm. Cytoplasm is a gel-like substance that fills the cell and allows it to move and change shape.
Step-by-step explanation:
When an amoeba wants to move, it extends false feet or pseudopods. These pseudopods are formed by the streaming of cytoplasm towards a certain direction. The cytoplasm flows into these pseudopods, causing them to extend and push the cell forward.
Because the cytoplasm makes up a significant portion of the cell, it provides the flexibility and fluidity necessary for the amoeba to change its shape. This allows the amoeba to move in different directions and adapt to its environment.