THIS IS MULTIPLE CHOICE When people use plastic combs on their hair, the combs become negatively charged. Which statements about this situation are true?

The comb loses electrons.
The comb galns electrons.
The hair loses electrons.
The hair galns protons.
The hair loses protons.​

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

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.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.