Which organism is a producer?

mouse

snake

owl

grass

Grass

Explanation:

since producer is the first thing in the food chain its grass

the answer is grass because it is not a decomposer or a herbivore or a carnivore. Herbivore is the primary consumer that feeds directly on producers (plants). In the given food chain, the grasshopper is feeding on the grass (producer), so it is a herbivore.  So, the correct answer is 'Grasshopper because it eats grass'.

Explanation:

this protocol provides a detailed procedure for agarose-based ip to purify and enrich the protein of interest.