Can algae protect it self from changes in the enviroment

Algae have a variety of adaptations that help them survive including body structures, defense mechanisms, as well as reproductive strategies. Some algae have hold fasts that attach to the sea floor and anchor them down much like roots of a plant. Many algae, such as Sargasso, have gas-filled structures called floats.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.