Researchers have found a number of factors that affect the survival of urban street trees in Los Angeles. Which of the following is NOT an abiotic factor?
A. Presence of invasive giant palm borer beetles
B. Rainfall
C. Concentration of nitrogen in the soil
D. Number of days of sunshine
Answer:
A. Presence of invasive giant palm borer beetles
Explanation:
In biology and ecology, abiotic components or abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
Researchers have found a number of factors that affect the survival of urban street trees in...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...