Respuesta :

1a. Heron, Trout, Mayfly, Algae

1b. C

1c. C

1d. I don't know this one

I hope this is helpful...

1a. Heron, Trout, Mayfly, Algae.

1b. This answer is going to be C.

1c. This answer will also be C.

1d. I would go with C. 150 kg.

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