Which of the following describes a reason to use phosphorus on plants? to weaken a weed plant and make it vulnerable to pests and disease
O to act as a multivitamin, boosting plant health
to help plants grow strong root structures and large flowers
O to help roots absorb nitrogen and potassium

it is a

explanation:

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.

oxygen +1 most likely

geologic time scale (for gradpoint) =)