6- If algae was removed from this ecosystem as a result of human activities, which organism(s) wilIbe most affected and how?answer7- If the killer whale obtained 26,000 Joules of energy by eating the crabeater seal,Ohow much energy was available at each of the following trophic levels.AlgaeKrill → Adelie Penguin → Crabeater Seal5432I Use the igure below, which shows the food web of an aquatic ecosystem, to answer the following questions:Killer whaleElephant sealCrabeater sealAdeliepenguinSquidLeopard sealCodSmall animalsand protistsAlgaeKrill

6. May be all the animals will get affected. 7.According to the Ecological tithe law, if the Killer…

Answered: 6- If algae was removed from this…

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter48: Human Impacts On The Biosphere

Section: Chapter Questions

Problem 13SQ

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Need help 1. Based on Graphicsa) Where is the position of the marine biota zone, make a zone inhabited by stenohaline and euryhaline groups. Explain!b) Why is the number of estuary water species the least compared to the other two biota groups? 2. Where is the productivity of plankton in the neritic and oceanic layers high? what is the reason for this?
A food chain would be a better resource than a food web to answer which question? How does energy move from an organism in one trophic level to an organism on the next trophic level? How does energy move within a trophic level? What preys on grasses? How is organic matter recycled in a forest?
Which term describes the process whereby toxic substances increase along trophic levels of an ecosystem? biomassification biomagnification bioentropy heterotrophy
Which of the following statements is supported by the results of studies at the Hubbard Brook Experimental Forest? a. Most of the energy captured by primary producers is lostbefore it reaches the highest trophic level in an ecosystem. b. Deforested watersheds experience significantly less runoffthan undisturbed watersheds. c. Deforested watersheds lose more calcium and nitrogen inrunoff than undisturbed watersheds. d. Nutrients generally move through biogeochemical cycles veryquickly. e. Deforested watersheds generally receive more rainfall thanundisturbed watersheds.
Nitrogen-fixing bacteria live throughout the ocean, from its sunlit upper waters to 200 meters (650 Feet) beneath its surface. Recall that nitrogen is a limiting factor in many habitats. What effect would an increase in populations of marine nitrogen-fixers have on carbon uptake and primary productivity in those waters?
rticle: More than 1000 rivers account for 80% of global riverine plastic emissions into the ocean 3. Is the article disturbing? or not at all? Why?
2. Large predatory marine fish (ex: tuna, swordfish, marlin, shark, etc.) usually eat at the third through seventh trophic levels. Is it efficient for humans to rely heavily on these species as food sources? Why or why not?
1. With consideration on the plankton density and other parameters, explain the difference or similarity in the computed Gross Primary Productivity (GPP) of the two microhabitats. value of GPP in Sandy microhabitat = 425 value of GPP in Rock microhabitat = 375 GPP as Carbon fixed (mg/ m3) per hour
1. Why is that there are no more than 5 or 6 trophic levels in a community? 2. Why do we need to conserve or protect threatened or endangered species, and how does the loss of species affect communities? 3. Why are population sizes not constant?
6. Mant top level consumers are large carnivores. Explain how their size affects or is affected by the dynamics of energy, biomass and/or numbers pyramids. 7. What other factors in an ecosystem may affect pyramid shapes for that ecosystem? 8. What level of an ecological pyramid would contain humans? Please explain your choice. 9. Many farmers use pesticides on their fields to keep pests from eating their crops. These pesticides, however, can have serious, negative effects on other organisms thaat interact with the ecosystem. For that reason, some people have suggested that bringing in predators to eat the pests would be a better soulution than pesticides. a. Explain what affeccts bringing predators in could have on the ecosystem. b. Which level of organisms is most susceptible to extinction. Please support your answer.
1. Where did the energy go due to losses? 2. Which among the organism in example 2 (food web) receives the least amount of energy? (except decomposers). 3.. Which has the least amount of energy?
1. With consideration on the plankton density and other parameters, explain the difference or similarity in the computed Gross Primary Productivity (GPP) of the two microhabitats. EXPLAIN PLS value of GPP in Sandy microhabitat = 425 value of GPP in Rock microhabitat = 375 GPP as Carbon fixed (mg/ m3) per hour

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