An original work or a scientist's experiment is called a
tertiary source
secondary source
primary source

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?