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harlequineel895Lv1

28 Sep 2019

Explain: (a) why we use scientific names written in Latin (andsometimes Greek) and (b) the importance of binomial nomenclature innaming organisms. Give examples of three scientific names (incorrect binomial format) of common organisms. Check the internetfor examples of organisms that interest you. (Plagiarism beingobserved)

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Sixta KovacekLv2

28 Sep 2019

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Essay: Short Essay: Write a logical and factually correct paragraph on the following topic, using correct English grammar, punctuation, and spelling. Be concise. Write your essay in the space provided below. Please write clearly and large enough for your instructor to read! You will see one of the following topics on your exam: 1. Compare and contrast the scientific use of the following: opinion, hypothesis, theory, and law. 2. Briefly define the regulatory processes of positive and negative feedback. Give an example of each and explain how your examples illustrate the processes. Also explain why negative feedback is more common than positive feedback in living organisms. 3. Name five of the interspecific interactions that we discussed in class. For each one, define it and indicate one of the following four symbols: +/+ +/0 +/- -/-

oliveporcupine926

NOTE: This lab assignment has questions related to binomial nomenclature. Please note that the assessment system does not accept formatted text, so you will need to indicate any italicized words by adding âITâ in parentheses after each word that is to be written in italics, (IT). For example, the common fruit fly is genus Drosphila and species melanogaster. When written, it is Drosophila melanogaster. From this example, the correct way to represent the italicized words is by typing, Drosphila (IT) melanogaster (IT).

Record the classes for each of the following arthropods, as determined from the dichotomous key (16 points): Organism 1 (Spider) Organism 2 (Bee) Organism 3 (Beetle) Organism 4 (Blue crab) Organism 5 (Crayfish) Organism 6 (Tick) Organism 7 (Fiddler crab) Organism 8 (Centipede) Organism 9 (Shrimp) Organism 10 (Millipede) Organism 11 (Wasp) Organism 12 (Grasshopper) Organism 13 (Horseshoe Crab) Organism 14 (Mole Crab) Organism 15 (Scorpion) Organism 16 (Squilla) Provide the family name for each shark based on the use of the dichotomous key provided (14 points): Shark 1 Shark 2 Shark 3 Shark 4 Shark 5 Shark 6 Shark 7 Shark 8 Shark 9 Shark 10 Shark 11 Shark 12 Shark 13 Shark 14 Submit the dichotomous key for the "imaginary" animals. (10 points) When might a prepared key be used to identify biological organisms? (5 points) Why are there only two choices for each step in the dichotomous key? (3 points) Why are observation skills important when working with dichotomous keys? (5 points) List the domain, kingdom, phylum, subphylum, class, order, family, genus, and species of humans. (9 points) domain kingdom phylum subphylum class order family genus species What is the scientific name for humans? (4 points) It is estimated that there are more than 1 million species of insects on this planet. Based on this and information gained from this laboratory, what phylum most likely comprises over 90% of the Earth's species? Briefly justify your answer. (4 points) Scorpions and spiders both belong to the same class called Arachnida. Birds and fish both belong to the phylum Chordata. Which two organisms are more closely related? Explain why. (5 points) Using the evolutionary distances from the protein sequences activity (Step 4 of the procedures), fill in the diagram below. The letters should correspond with the sequence numbers (e.g., 1, 2, 3, 4, or 5). (5 points) A B C D E

amberraccoon254

Question:

Organisms living in Antarctica are thought to be particularly susceptible to change in climatic conditions. How might future climate changes affect the distribution of Antarctic organisms?

Describe the current Antarctic climate and factors that are likely to affect environmental change. Make predictions about future changes to the environment and how this might impact the distribution of organisms in the region.

Below has the format that it could be answered.

below the template, it has exampler template with different topic.

------ template

What do you think is the answer to the question? / What is your perspective on the topic? This is your stance or thesis.

Why do you think this? Give at least three supporting reasons (main points)

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-
-

Use your stance and supporting points to build your plan. For each main point give a brief explanation, some evidence and/or examples you will use to support it. Provide references where appropriate.

I. Introduction

Possible ideas for the introduction:

(What does the reader need to know to understand the essay? Write as a statement rather than a question or keyword)

Proposed thesis statement:

II. Body - The number of body paragraphs will vary from essay to essay, you choose how many you need.

- Topic sentence:

(Include the main point making it clear how it supports your stance)

Explanations /Evidence/ Examples (include references with each fact (author, date)):

Write as a statement of fact not as a question, heading or keyword

- Topic sentence (include the topic and how it supports your stance):

Explanations /Evidence/ Examples (include references (author, date)):

Write as a statement of fact not as a question, heading or keyword

-Topic sentence (include the topic or how it supports your stance):

Explanations /Evidence/ Examples (include references (author, date)):

Write as a statement rather than a question or keyword

III. Conclusion:

(What are the broad implications of the essay?)

DRAFT WRITING

Introduction and first body paragraph

------- exampler template with different topic

I. Introduction

Possible ideas for the introduction

Climate change

Process of OA

Somehow lead to SO

Thesis Statement : All organisms living bathed in an acidic environment will incur a metabolic cost as a result of the energy expended to maintain functioning cell chemistry this results in reduced growth and reproductive outputs. As a consequence population numbers will drop with a flow on reduction in overall ecosystem biomass and diversity.

II. Body

Main Point: OA has a metabolic cost for all marine organisms and affects growth, reproduction and nutrient value as a food source.[CA2]

Examples/Details/Explanations (include references (author, date)) :

Most pronounced in small organisms but is variable and dependant on pH

e.g. krill, gill & haemolymph regulation issues (Flores et al, 2012) ;

e.g. phytoplankton, reduced nutritional value;

e.g. shell forming organisms dissolution of CaCO₃ shells e.g. pteropods

Main Point: The metabolic cost on the individual results in lower numbers of individuals in a population.

Examples/Details/Explanations (include references (author, date)):

This cost results in reduced fertilisation, extended larval development time, deformities

e.g. seastar (Gonzalez-Bernat et al, 2014) detail effects at different pH levels;

e.g. urchin (Sewell et al 2014)

Main Point: A reduction in biomass of any one species has flow on effects up and down the food chain and could be especially pronounced in the unique Southern Ocean ecosystem.

Examples/Details/Explanations (include references (author, date)):

SO characterised by high nutrient low productivity, âwasp-waistâ structure and short food chains

e.g. phytoplankton as primary producers

e.g. krill as important food source

e.g. pteropods as nutrient cyclers

Main Point: Reduced food availability will likely alter interspecific interactions and may result in some species being driven to extinction.

Examples/Details/Explanations (include references (author, date)):

a. competition will increase as a result of less food e.g. between larger birds and mammals as a flow on from loss of krill

b. shell forming species will be at greater risk of predation due to weaker shells

c. e.g. seastars as keystone species maintaining diversity

III. Conclusion

Effects at organism level will impact on total biomass of that species and those that depend on it for food, therefore the overall productivity and biomass of the SO ecosystem will be reduced and loss of species diversity is expected.

Other Ideas to Conclude:

Effects growth and reproduction and is especially costly for shell forming organisms.

Will see changes as a result of effects on organisms with key functions within the SO ecosystem.

Ideas to leave the reader with (clincher):

Global significance of effects of OA on SO (something related to carbon sink and sequestering of Carbon) or perhaps reminding reader that OA is only one consequence of climate change and that organisms will also be at risk from rising sea temps, melting ice, and invasive species.

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