Some pigs learned to pick up and deposit wooden coins in a piggy bank, but soon the pigs were more often dropping the coins and pushing them with their snouts. this best illustrates the concept of in operant conditioning.
a) conditioned reinforcement
b) latent learning
c) generalization
d) biological predisposition

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.