Fertilizer can lead to algal bloom in aquatic ecosystems, which means that its usage may lead to oversaturation of algae in the seas and oceans. Although algae are good for these kinds of waters in limited amounts, when there are too much of them it can stifle all other life, thus having negative effects on aquatic ecosystems.
The correct answer is filtration.
The small molecules can cross in and out of the capillaries through facilitated or simple diffusion. However, the majority of the flow of capillary and tissue fluid takes place through the process of filtration and reabsorption. Filtration refers to the movement of the fluid out of the capillaries and is mediated by the capillary hydrostatic pressure.