Either adenine and guanine or thymine and cytosine. It is either because the first adenine pairs with thymine and guanine pairs with cytosine, So each rung will have one of the two pairs.
The collared peccary, a type of hog, eats cactus.
The purpose<span> of a </span>salt bridge<span> is not to move electrons from the electrolyte, rather it's to maintain charge balance because the electrons are moving from one-half </span>cell<span> to the other. The electrons flow from the anode to the cathode.</span>