Why are plants considered the basis of biotic existence?

Explanation

**Step-by-Step Solution:**

1. **Understanding Ecosystems**:
- An ecosystem consists of two main components: biotic (living) and abiotic (non-living).
- Biotic components include plants and animals, while abiotic components include factors like temperature, water, and soil.

2. **Role of Plants in Ecosystems**:
- Plants are classified as producers or autotrophs because they can produce their own food through photosynthesis.
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