Ecological pyramids are usually upright. Meanwhile some pyramid of biomass is inverted. Explain the reason.

Explanation

**Step-by-Step Solution:**

1. **Understanding Ecological Pyramids:**
- Ecological pyramids are graphical representations that illustrate the relationships between different trophic levels in an ecosystem. They can be depicted in three forms: Pyramid of Numbers, Pyramid of Biomass, and Pyramid of Energy.

2. **Types of Ecological Pyramids:**
- There are two main types of ecological pyramids: upright and inverted.
- An upright pyramid shows a decrease in the number of organisms, biomass, and energy as you move up the trophic levels.
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