Algae is a so-called primary producer, meaning it is foundation for the entire food chain.

藻类是所谓的初级生产者，这意味着它是整个食物链的基础。

As plants are primary producers that make their food from sunlight, they form the lowest level and have the greatest biomass.

由于植物是利用阳光制造食物的初级生产者，因此它们形成最低层并具有最大的生物量。