continue reading → activated carbon for swimming pools filter pacc premium activated carbon® has been used for the treatment of swimming pool water to remove organic matter and other compounds may be irritating to the eyes of swimmers. pacc premium activated carbon® are produced from the selected coconut shell...
non-reward trials, and green in non-reward trials. the wild-captured crabs did so after days of reward training, and distinguished green in non-reward trials. these results indicated colour vision in s. tranquebarica. however, the crabs were unable to distinguish blue or green in dim light of cd/m (...