'Ddt' diaporamas de présentation

??????

2.43k views • 182 slides

Integrating Concepts in Biology

Integrating Concepts in Biology. PowerPoint Slides for Chapter 8: Evolution of Organisms. by A. Malcolm Campbell, Laurie J. Heyer, and Chris Paradise. An orchid growing wild in Torres Del Paine National Park. Front art piece UN8.1. Relationship between height of parents and offspring.

533 views • 40 slides

The history of DDT

The history of DDT. ENT 5009, S 2011 Vera Krischik Entomology, U Minnesota. The history of DDT. DDT is moderately to slightly toxic to mammals by the World Health Organization as Class II DDT oral toxicity. acute oral LD 50 113-118 mg/kg in rats 150-300 mg/kg in mice

544 views • 37 slides

P ersistent O rganic P ollutant s (POPs)

Sigid Hariyadi. P ersistent O rganic P ollutant s (POPs). DIOXIN. PCBs. Pesticides. POPs.

706 views • 34 slides

434 views • 30 slides

Ecosystem Ecology

Ecosystem Ecology. Chapter 55. Succession. Populations ebb & flow over time, but sometimes there is a dramatic disturbance that destroys an ecosystem Called a blowout Such as forest fires, volcanic eruptions, flooding Human activity: clear cutting of a forest or strip mining

453 views • 27 slides

Early Victories: Winning the DDT Battle and Founding EDF Why and How DDT was Banned 38 Years Ago

Early Victories: Winning the DDT Battle and Founding EDF Why and How DDT was Banned 38 Years Ago Adapted from a presentation by Charles F. Wurster Professor Emeritus of Environmental Sciences, Marine Sciences Research Center, State University of New York at Stony Brook. Lecture Outline.

343 views • 24 slides

Bi o m a g n i f i cati on

Bi o m a g n i f i cati on. Bioaccumulation vs Biomagnification. Bioaccumulation: increase in concentration of a pollutant from the environment to the first organism in a food chain Biomagnification : increase in concentration of a pollutant from one link in a food chain to another.

470 views • 20 slides

Ecology Essays

307 views • 19 slides

DDT

483 views • 19 slides

Pesticides: DDT

Pesticides: DDT. Tonatiuh Hernandez Bio. 2B. What is a Pesticide. Chemical used and created by humans to kill and control undesirable organisms (such as insects or certain plants)

998 views • 17 slides

Biology Decision Case

Biology Decision Case. Bi o m a g n i f i cati on. The Problem:. Peregrine Falcons Extirpated from much of U.S. http://www.iowaccess.org/main/news/newsimages/peregrine.jpg. Osprey and Bald Eagles were declining, as well. http://www.state.tn.us/twra/graphics/BLDEAGLE.jpg.

251 views • 16 slides

Speculative Data-Driven Multithreading (an implementation of pre-execution)

264 views • 16 slides

D ichloro D iphenyl T

319 views • 16 slides

5.3 Approaches to Pollution Management

5.3 Approaches to Pollution Management. Assessment Statements. 5.3.1 Outline approaches to pollution management with respect to figure 5. 5.3.2 Discuss the human factors that affect the approaches to pollution management.

287 views • 14 slides

Harmful Effects of DDT on the Earth

305 views • 11 slides

DDT Spraying

DDT Spraying. By: Sarah Ritter. This model shows what elements DDT is made of. These are some bugs DDT was meant to kill. Bed Bugs. Asian Beetles. DDT can affect food chains. Some people approve of DDT spraying. http://bestmeal.info/images/monsanto/DDT/DDT-can.jpg

261 views • 8 slides

DDT

333 views • 7 slides

107 views • 1 slides

CONCLUSIONS

96 views • 1 slides