The most productive marine habitats are in the open ocean. select the best answer from the choices provided t f

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Why is there more biomass at the producer level that at the consumer levels ? how does this relate to the 10% rule ?