Bioaccumulation Study guides, Class notes & Summaries

Pest - ANSWER-an undesirable organism that injures humans, desirable plants and animals, manufactured products, or natural substances. pathogens - ANSWER-disease-causing organisms, such as viruses, bacteria, or fungi Pesticide resistance - ANSWER-When pests adapt and become resistant to a pesticide. First seen in resistance to DDT in 1947 bioaccumulation - ANSWER-The accumulation of pesticide in the fatty tissue of some animals biomagnification - ANSWER-The Food chain. Organ...

Vector Control Questions and Answers Rated A+ Vector control can be divided into: Chemical involving natural or synthetic chemicals as control agents Non-chemical including natural control methods, that focuses on biological, microbial, cultural, physical, mechanical, or legislative method to control vectors. Chemical Control Inorganic: -insecticides—lead arsenate; fungicides—mercuric chloride; rodenticides—zinc phosphide Organic -natural—botanicals: pyrethrins, roteno...

WIS2040: Exercise 4 Questions and Answers Graded A+ At least 10 species of ___ have been introduced to New Zealand for recreational hunting. Deer Eggshell thinning was a problem for the ___ during the 1950s and 1960s. Peregrine Falcon ___ is the chemical once used by Florida tomato growers that has been found to be harmful to the ozone layer. Methyl bromide Fisheries in the Aral Sea collapsed due to ___. Water extraction for farming Presently ___% of BLM managed lands are grazed by privatel...

PA Pesticide Applicator Exam Core Info Correctly Answered Bioaccumulation - ANSWER The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism. Biomagnification - ANSWER Accumulation of pollutants at successive levels of the food chain abiotic factors - ANSWER natural control measures within the environment. EX: climactic factors, air/water pollution, topographic features. Biological Control - ANSWER The use of natural enemies to control pest...

Oceanography 100 Final SDSU Exam Questions And Answers 100% Verified How was the solar system formed? - answer-a supernova (explosion of a start when it runs out of fuel) -4.6 billion years ago how was the earth formed? - answer-a nebula made of gas and dust -was formed 4.5 billion years ago how did oceans form? - answer-A volcanic expulsion - rained for thousands of years -hit by an icy comets -volcanic out gassing and ice from comets when did life form? - answer-3.7 billion years ag...

How Old are the oceans - 4 billion years How were atmospheres and oceans formed - outgassing and icy commets what is outgassing - when volcanoes erupt and water vapor is condensed and turned into clouds and rain What are the internal Layers of earth - lithosphere asthenosphere mesosphere outer core inner core Lithosphere - Crust and Upper Mantle Asthenosphere - upper mantle (below lithosphere) Mesosphere - Rest of Mantle Outer core and inner core - outer fluid inner so...

PESTICIDE APPLICATORS LICENSE SUMMARY EXAM 2023 WITH QUICK ACCESS NEW UPDATE 1. Action threshold the pest level at which some type of pest management ac- tion must be taken 2. Bioaccumulation The accumulation of toxic substances, such as pesticides, or other organic chemi- cals in an organism 3. Biomagnification The tendency for certain pesticides to progressively become more concentrated in each type of organism when moving from the bottom to the top or- ganism within a food chain 4....

origin of earth - • Supernova: death of a star (great explosion) • Supernova happened 4.6 bya, dust and gas flattens to a disk and spins faster due to gravity and solar nebula formed. • Solar Nebula: describes formation of Earth 4.5 bya • Nebula: gas cloud origin of oceans - • volcanic explosion, H2O condensed and rained down for thousands of years to create oceans • icy comets hitting earth (responsible for 1/2 of earths ocean water) origin of life - • 4.5 bya ...

ENV Health Exam 2 - Toxic Metals And Elements Questions And Answers Toxic metals - Correct Answer->-heavy metal that has a high atomic weight with a specific gravity that exceeds the specific gravity of water by five or more times at 4 celsius or 39F - featured in the CERCLA priority list of hazardous substances CERCLA: priority list of hazardous substances - Correct Answer->- The Agency for Toxic Substances and Disease Registry (ATSDR) has identified a list of rank-ordered hazardou...

PA Pesticide Applicator Exam Core Info Question and answers rated A+ 2024 Bioaccumulation - correct answer The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism. Bio magnification - correct answer Accumulation of pollutants at successive levels of the food chain abiotic factors - correct answer natural control measures within the environment. EX: climactic factors, air/water pollution, topographic features. Biological Control - correct ...