Organisms that obtain their food by consuming other organisms are termed heterotrophs. They cannot produce their own food through photosynthesis or chemosynthesis and rely on organic matter for energy and nutrients. Heterotrophs include a wide range of organisms, such as animals, fungi, and many bacteria. They play an essential role in the ecosystem by contributing to energy transfer and nutrient cycling, acting as consumers in food chains. Their dietary habits can vary widely, including carnivorous, herbivorous, or omnivorous feeding strategies.