sunlight and soil oxygen and carbon dioxide food and nesting areas soil and salt water
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What are two resources in terrestrial biomes that most vertebrates (animals with backbones) compete for?
Possibilities:
- sunlight and soil
- oxygen and carbon dioxide
- food and nesting areas
- soil and salt water

food and nesting areas