Reproductive cells in humans are also called

Explain the importance of producers, primary consumers, secondary consumers and decomposers in an ecosystem.

2. if scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to? a. roundworms b. annelids c. mollusks d. flatworms

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.