Which adaption is likely to be common among prey species

it is important because they need to survive. as Darwin theory puts it , its not the strongest that survive but the one who is more adaptable to change.

for example. jellyfish have stingers which it uses to slow down its prey

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 solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.