What type of symbiosis is this? Salmon and Sea lice, Sea Lice feed off the Salmon mucus and skin and this is unhealthy for the salmon. For marine class

Um can u take a picture of the work

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.

if you solve this you will know the answer