Question

1. make an ecological/energy pyramid with the following organisms: grass, echidna, dingo, termites.

Explanation:

To create an ecological/energy pyramid, we first identify the trophic levels. Producers (autotrophs) form the base. Grass is a producer (photosynthetic, makes its own food). Then primary consumers (herbivores) eat producers: termites eat grass. Secondary consumers (carnivores/omnivores that eat primary consumers): echidna can eat termites. Tertiary consumers (top predators that eat secondary consumers): dingo can eat echidna. Energy decreases at each level (10% rule), so the pyramid shape has decreasing biomass/energy as we move up.

Answer:

The ecological/energy pyramid (from bottom to top, with decreasing energy/biomass) is structured as:

• Producer (Bottom Level): Grass (converts solar energy to chemical energy via photosynthesis, supports all other levels).
• Primary Consumer (Second Level): Termites (herbivores, feed on grass, obtain energy from plant matter).
• Secondary Consumer (Third Level): Echidna (omnivores/carnivores, feed on termites, obtain energy from primary consumers).
• Tertiary Consumer (Top Level): Dingo (top predator, feeds on echidna, obtains energy from secondary consumers).

This pyramid reflects the flow of energy (≈10% transferred between levels) and the trophic relationships among these organisms.