Answer:
I'm not sure if the answers are supposed to be creative, but these are my guesses based on biological definitions:
1. A fungus that is a decomposer ( saprotrophs )
2. An photoautotrophic tree would be a producer (all trees are photoautotrophs: pine trees, redwood trees, fruit trees, etc)
3. A heterotroph - this is very vague as the question is vague. These can be either primary consumers or secondary consumers. Either way, they are not producers and are consumers.
4. Black / brown bear - omnivorous consumer
