Compare and contrast two different categories of heterotrophs in short sentences.
1. Herbivores primarily consume plants, while carnivores primarily consume other animals.
2. Herbivores have longer digestive systems to break down plant material, while carnivores have shorter digestive systems for quickly digesting meat.
3. Herbivores may have flat teeth for grinding plant material, while carnivores have sharp teeth for tearing flesh.
4. Herbivores may rely on symbiotic relationships with microorganisms in their gut to help break down plant material, while carnivores do not have this requirement.