* Sunlight: Rainforests receive a lot of sunlight, which is crucial for photosynthesis by plants.
* Temperature: Rainforests have consistently high temperatures, rarely dropping below 20°C (68°F).
* Rainfall: Rainforests receive a lot of rainfall, usually exceeding 2000 mm (80 inches) per year.
* Humidity: Rainforests have very high humidity due to the constant rainfall and dense vegetation.
* Soil: Rainforest soils are often acidic and nutrient-poor, but they can be very fertile due to the rapid decomposition of organic matter.
* Water: Rainfall and rivers provide water for plants and animals.
* Air: Rainforests have high levels of oxygen and carbon dioxide due to the abundance of vegetation.
For example, sunlight is a key abiotic factor in a rainforest as it fuels the entire ecosystem. It allows plants to perform photosynthesis, which is the foundation of the food chain.
