Complex sentence: The slugs have been shown to migrate along extremely shallow gradients of only 0.05 ° C/cm, but the direction chosen is complicated; it seems to be away from a temperature about 2 ° C below the temperature to which they had been acclimated.
Split into simpler sentences: The slugs have been shown to migrate along extremely shallow gradients of only 0.05C/cm. But the direction chosen is complicated; it seems to be away from a temperature about 2 ° C below the temperature to which they had been acclimated.