Earthworms improve the texture and composition of the soil, aerating compacted earth, adding nitrogen to the soil, and helping form small clusters of soil, called (blank)
which their slime helps hold together.

i think its soil structures

Explanation:

Worms dig hols and hold the soil togetyer with slime and make pockets for air and water. Im not 100% sure but i think it is.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.