Answer:
It could be shrubs or grass
Explanation:
Producers in ecosystems are autotrophic organisms, that means organisms that can synthesise their own food and do not rely on other organisms to provide food to them. Plants do this via photosynthesis - therefore plants are the producers of ecosystems.
Herbivores (such as caterpillars and thrushes) are primary consumers. Carnivores (such as weasels and foxes) are secondary/tertiary consumers, depending on the number of trophic levels.
