In a laboratory experiment, researchers treated pine seedlings from puerto rico with mycorrhizae collected from pine forests in the southeastern united states. results were favorable for increased seedling growth in the trees treated with mycorrhizae. suppose when the researchers then tried this same experiment in the field, pine tree seedlings treated with mycorrhizae showed minimal growth differences from the control group. all but one of the listed factors could have contributed to these results. choose the exception.

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

Variety of living organisms; includes genetic, species, and ecological types.