Como intervenir los humanos en esta relacion trofica

Spanish:

Las cascadas tróficas son poderosas interacciones indirectas que pueden controlar ecosistemas enteros. Las cascadas tróficas ocurren cuando los depredadores limitan la densidad y / o el comportamiento de sus presas y, por lo tanto, mejoran la supervivencia del siguiente nivel trófico inferior.

English:

Trophic cascades are powerful indirect interactions that can control entire ecosystems. Trophic cascades occur when predators limit the density and/or behavior of their prey and thereby enhance survival of the next lower trophic level.

the 4th option is the answer

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.