Protozoa are heterotrophic, meaning they cannot produce their own food. They must obtain nutrients from other organisms.

Here's a breakdown:

* Heterotrophic: Means "other feeding" or "different feeding".

* Autotrophic: Means "self feeding", referring to organisms that can produce their own food through processes like photosynthesis (like plants).

Protozoa obtain their food by consuming other organisms, either whole or in part. They may be:

* Predatory: Hunting and consuming other protozoa, bacteria, or even small animals.

* Parasitic: Living inside or on another organism and obtaining nutrients from their host.

* Saprozoic: Feeding on dead organic matter (like decaying plants and animals).

Let me know if you'd like to know more about different types of protozoa and their feeding habits!