* Components: Blood is composed of various components like:

* Plasma: A liquid containing water, proteins, electrolytes, and nutrients.

* Red blood cells: Carry oxygen.

* White blood cells: Fight infection.

* Platelets: Involved in blood clotting.

* Variable Composition: The proportions of these components can vary slightly from person to person and even within the same person at different times.

* No Fixed Ratio: The components don't combine in a fixed ratio to form a new substance.

* Separable Components: The components of blood can be separated using techniques like centrifugation.

These characteristics align with the definition of a mixture, where components retain their individual properties and can be separated.