Answer:
If the prey was a producer they would get energy from the sun.
If the prey was a consumer they would get it from a producer or a consumer they were able to eat.
Explanation:
I think that the answer is behavioral isolation because this isolation helps members of the same species identify each other as mates and that's what the emperor penguins do.They call their mate with a specific sound.I'm not 100% sure tho
They should all be eukaryotic
the process that plants go through to capture and use energy from the sun to make food (glucose ) is called Photosynthesis