Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 30, Problem 4FIB
Summary Introduction
Introduction: The aquatic ecosystem is composed of both freshwater ecosystem and marine ecosystem. Freshwater ecosystem is consists of lentic and lotic ecosystem. It acts as shelter for most of aquatic organisms. The freshwater ecosystem is only 3% but remaining is the marine ecosystem.
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The pelagic zone of the ocean is the area of the ocean that is neither close to the bottom nor close to land. There are a wide variety of organisms that inhabit the pelagic zone. Phytoplankton float along the surface, using photosynthesis to produce food. Zooplankton are tiny organisms that float in the surface waters and feed on the abundant phytoplankton. Krill, small crustaceans, also feed on phytoplankton. They display vertical migration in which they swim at deeper depths during the day and then come up to the surface waters at night to eat. What is the relationship between zooplankton and krill?
a) Symbiosis
b) Competition
c) Parasitism
d) Commensalism
e) Mutualism
Marine Biology
a) Despite being so large, the ocean contributes to (more or less) primary production because it is__________, which means it doesn't have very many nutrients. Even so, _______________can survive her and absorb the few nutrients because they are____________. Small things have more_____________
b) cyanobacteria were the first to produce oxygen and form stromatolites made of ______________
Stratification alters biogeochemistry and ecology in aquatic ecosystem. Why does stratification in lake can happen?
Chapter 30 Solutions
Biology
Ch. 30.1 - Prob. 1CYLCh. 30.1 - Prob. 2CYLCh. 30.1 - Prob. 3CYLCh. 30.2 - Prob. 1TCCh. 30.2 - Prob. 2TCCh. 30.2 - Prob. 1CSCCh. 30.2 - explain how Earths curvature, tilt on its axis,...Ch. 30.2 - Prob. 2CYLCh. 30.2 - Prob. 3CYLCh. 30.3 - Prob. 1TC
Ch. 30.3 - Prob. 1CSCCh. 30.3 - Prob. 2TCCh. 30.3 - describe the principal terrestrial biomes and...Ch. 30.3 - describe human impacts on terrestrial biomes?Ch. 30.4 - Prob. 1HYEWCh. 30.4 - Why do estuaries and other coastal ecosystems have...Ch. 30.4 - Prob. 1CYLCh. 30.4 - Prob. 2CYLCh. 30.4 - describe some effects humans have on aquatic...Ch. 30.4 - Prob. 1CTCh. 30 - Prob. 1MCCh. 30 - The biome that is mostly covered by grass and...Ch. 30 - Prob. 3MCCh. 30 - Prob. 4MCCh. 30 - Prob. 5MCCh. 30 - Prob. 1FIBCh. 30 - Prob. 2FIBCh. 30 - Prob. 3FIBCh. 30 - Prob. 4FIBCh. 30 - Prob. 5FIBCh. 30 - Explain how air currents contribute to the...Ch. 30 - Prob. 2RQCh. 30 - Prob. 3RQCh. 30 - Prob. 4RQCh. 30 - List some adaptations of desert cactus plants and...Ch. 30 - Prob. 6RQCh. 30 - Prob. 7RQCh. 30 - Prob. 8RQCh. 30 - What environmental factor best explains why the...Ch. 30 - Prob. 10RQCh. 30 - Prob. 11RQCh. 30 - Prob. 12RQCh. 30 - Prob. 13RQCh. 30 - Prob. 14RQCh. 30 - Prob. 1ACCh. 30 - Prob. 2AC
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- Which lake zone would be absent in a very shallow lake with good clear water and light can penetrate the entire depth of the lake? aphotic zone benthic zone limnetic zone littoral zonearrow_forwardYou have two identical bags and fill them with the same amount and type of leaves. You put the identical bags in two different areas of a river. After several weeks, one set of leaves has almost disappeared and the bag is full of organisms. The other set of leaves is still mostly whole and the bag has few organisms in it. Questions: What are some ways the two different areas of the river could be different? How might these differences explain why the leaf packs in one area have more organisms than the leaf packs in another area?arrow_forwardMore about zonation Click on the question marks to change them to a check mark for each statement that is TRUE or a blank box if the statement is NOT TRUE about vertical zonation. Kelps and corraline algae can be found along the lower intertidal and subtidal zones. ? The lower intertidal is dominated by seaweeds. The first stage of ecological succession in the rocky intertidal is the establishment of bacteria and microscopic algae. Green, brown and red algae on the upper intertidal are able to fix nitrogen from the air. The effect of a keystone species can easily be judged by how abundant it is.arrow_forward
- Which one of the options below best describes where the water column meets the sea floor? The benthic zone The abyssal zone The euphotic zone O The pelagic zone The neritic zonearrow_forward21)Match the definition with the answer the best fits. Each answer should be used only once. Group of answer choices Example of an invasive species CHOOSE ONE OF OPTIONS [ Choose ] aquifer setting aside land for wildlife refuges high reproductive rate low reproductive rate zebra mussel captive breeding in zoos Round-up reservoir gasoline European cucumber deforestation respiration oil poisoning Acidification climate change process which leads to major habitat destruction and extinction CHOOSE ONE OF OPTIONS [ Choose ] aquifer setting aside land for wildlife refuges high reproductive rate low reproductive rate zebra mussel captive breeding in zoos Round-up reservoir…arrow_forwardO Neutral nline The pelagic zone of the ocean is the area of the ocean that is neither close to the bottom nor close to land. There are a wide variety of organisms that inhabit the eriods 1 and 2 pelagic zone. Phytoplankton float along the surface, using photosynthesis to produce food. Zooplankton are tiny organisms that float in the surface waters and feed on the abundant phytoplankton. Krill, small crustaceans, also feed on ods MP1, Highschool nool MP3, MP4 phytoplankton. They display vertical migration in which they swim at deeper depths during the day and then come up to the surface wakers at night to eat. What is the relationship between zooplankton and krill? H Thu Fri O Competition O Parasitism O Mutualism O Commensalism O Symbiosis Mycorrhizal fungi form obligate symbiotic relationships within plants. They are OO O Oarrow_forward
- A lake with low nutrient levels and very clear water is called eutrophic oligotrophic a dead zone a septic zone oxygen depletedarrow_forwardWhat freshwater source would you predict has the lowest dissolved oxygen concentration?arrow_forwardYou're kayaking and you notice that you can see pretty deep down to the bottom of the lake. You would most likely decribe this water body as... Selected Answer: Answers: eutrophic platytrophic dystrophic oligotrophicarrow_forward
- What are the four main factors that affect aquatic ecosystems? What does the depth of the water determine? What distinguishes the photic zone from the aphotic zone in an aquatic ecosystem? Plankton is a general term that includes both ..and Freshwater wetlands purify water by pollutants.arrow_forwardWhat's the difference between oligotrophic lakes and eutrophic lakes? Describe how "and what happens to the lake when human activities contribute to the formation of one of these types. This is the initial textarrow_forwardEntangles fish, marine mammals, and sea birds, preventing them from feeding or causing them to drown. Dead zones: algal blooms consume oxygen, kills shellfish and displaces fish. Poisonous algae and countless plants and animals have invaded harbor waters and disrupted the local ecological balance. Destruction of coral reefs. Of the seventeen major world fisheries, four are depleted and the other thirteen are either fished to capacity or over-fished. Ghost nets: lost or discarded fishing nets keep on fishing. Nitrogen and phosphorus from sources such as fertilizer, sewage and detergents, enter coastal waters. Invasive species, such as zebra mussels. Cruise ships and tourists. Commercial marine fisheries. 01 S ITEM BANK: M 2arrow_forward
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