Blank provide energy to the ecosystem and convert carbon dioxide into oxygen A predators
Bheterotrophs
C autotrophs
D consumers

A. Hetrotrophs

Explanation:

Hetrotrophs are plants. They provide energy to the ecosystem as they make food using photosynthesis. And they release oxygen as byproduct of Photosynthesis. And they use Carbon dioxide as raw product for photosynthesis.

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some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a