15 POINTS Which of the following is a density-dependent limiting factor on the Florida manatee population?

hot ocean waters

water salinity

bacteria

cold stress

In what for do plants utilize nitrogen? why do they need nitrogen?

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.

What are ways that ordinary people can to keep antibiotic resistance from getting worse?