There was a change in the environment between generations 10 and 30. the change likely

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

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.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.