This preview shows page 1. Sign up to view the full content.
Unformatted text preview: population density is a factor. It seems likely that one or the other extreme may dominate in some environments, with most environments having a combination control. Pollution Pollutants generally are (unplanned?) releases of substances into the air and water. Many lakes often have nitrogen and phosphorous as limiting nutrients for aquatic and terrestrial plants. Runoff from agricultural fertilizers increases these nutrients, leading to runaway plant growth, or eutrophication. Increased plant populations eventually lead to increased bacterial populations that reduce oxygen levels in the water, causing fish and other organisms to suffocate....
View Full Document
This note was uploaded on 11/29/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.
- Fall '10