What causes dead zones - Study guides, Class notes & Summaries

NBME PATHOLOGY EXAM WITH LATEST VERIFIED QUESTIONS AND 100% CORRECT ANSWERS GRADED A+ Apoptosis: - ANS-Programmed cell death. REQUIRES ATP. Can occur via the intrinsic or extrinsic pathways, both of which involve activation of cytosolic caspases which mediate cellular breakdown. ***Unlike necrosis, apoptosis does not involve significant inflammation. Involves eosinophilic cytoplasm, cell shrinkage, pyknosis and basophilia, membrane blebbing and karyorrhexis, and formation of apoptot...

Abiotic disorder - Answer- A non-pest plant stress such as improper nutrition, too much or too little water, winter or frost injury Action threshold - Answer- The pest density at which action (such as pesticide application) is justified to prevent further damage. Adelgid - Answer- An insect closely related to aphids that feed on conifers. Their feeding often causes galls to form. Aesthetic injury level - Answer- The point at which damage from a pest becomes noticeable enough to negative...

Which of the following is responsible for the increased growth of algae in the dead zones? - ANSWER ☑☑Elevated phosphorous and nitrogen in the water What is the source of the elevated nutrients in the water that cause the formation of dead zones in the Gulf of Mexico? - ANSWER ☑☑Agricultural runoff from much of the central United States Which of the following is directly responsible for depleting the supply of oxygen in bottom waters? - ANSWER ☑☑Bacterial growth Nitrogen ...

Nitrogen fertilizer is added to farmland to improve crop yield and quality. While farmers are working to reduce the amount of runoff from fields, some of the fertilizer enters streams. The streams flow into the Mississippi River and ultimately into the Gulf of Mexico where the added nitrogen supports increased algal and cyanobacterial blooms. The addition of nutrients to water systems, which causes increased growth of algae and cyanobacteria, is termed: - Eutrophication What is the source o...

Bio 102 Exam 3 Questions And Answers (Verified And Updated) Water pollution (18) - answerpollution from human activities, as well as naturally occurring pollution, enters freshwater systems comes from run-off during rains or directly through discharge Water pollution in closed systems (18) - answerlakes and ponds are closed systems, pollution mostly remains there Water pollution in open systems (18) - answerstreams and rivers enter large lakes or oceans, therefore the pollution is tran...

Bio 102 Exam 3 Questions And Answers (Verified And Updated) Water pollution (18) - answerpollution from human activities, as well as naturally occurring pollution, enters freshwater systems comes from run-off during rains or directly through discharge Water pollution in closed systems (18) - answerlakes and ponds are closed systems, pollution mostly remains there Water pollution in open systems (18) - answerstreams and rivers enter large lakes or oceans, therefore the pollution is tran...

Describe speciation. - The creation of new species. The way new species are created is: 1. They must be reproductively isolated, The original population separate into two populations (Preventing the two populations memes from mixing) 2. Separate populations must be exposed to different selective pressures. (Adapting to these pressures causes differences. In the Environmental Policy Life Cycle an environmental issue starts with a _____________ amount of disagreement and the amount of disagre...

Wildland Firefighting State Exam - Questions with Verified Answers Can you wear synthetic materials under your PPE, why? No, they will melt when heated and increase the likelihood of major injury How many layers of protective clothing should you wear? Two, should be made of cotton or lightweight merino wool Fire shelters protect FF by Reflecting, radiant, heat, and trapping cooler, breathable air How much radiant heat is reflected from the fire shelter? 95% How much convective heat is absorbed...

What is a myocardial infarction? - medical emergency - myocardial tissue abruptly and severely deprived of oxygen - results in irreversible death of myocardial cells - require immediate revascularization of blocked coronary artery What are the three zones of myocardial infarction? 1. zone of necrosis: completely dead 2. zone of injury: cells are injured 3. zone of ischemia: not getting enough o2 but can restore What causes a myocardial infarction? - coronary vasospasm - spontaneous dissection ...

1 MARINE ECOLOGY PHYSIOLOGY TEST 1 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ What is a biome? Correct Answer: a large naturally occurring community of flora and fauna occupying a major habitat. What is a Biome comprised of? Correct Answer: Plants and animals with similar life history and environmental conditions. What phrase is often used to describe a Biome/ Correct Answer: Major life zone How are Biomes usually named? Correct Answer: For their dominan...

Chapter 21: Wildland and Ground Fires Questions and Answers Rated A In which type of fuel will fire spread the most rapidly? FINE- fuels that ignite and burn easily, such as dried twigs, leaves, needles, grass, moss, and light brush. The smothering method of extinguishment is most frequently used in which wildland operation? OVERHAUL- the process of final extinguishment after the main body of fire has been knocked down. All traces of fire must be extinguished. Which term means areas where unde...