What is the importance of water in the sexual reproduction of nonvascular plants and ferns?

The negative impacts of nonnative species generally outweigh the positive impacts

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

Ruby is conducting an investigation. an advantage of her design is that she can use a large range of variables, with that she can not be sure that one variable is the cause of another. what kind of investigation is ruby most likely conducting?