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Organisms-and-Populations
If lynxes depend mainly on hares for food, relationship between hares and lynxes is described by
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This Chapter Organisms-and-Populations consists of the following topics
Read the passage and answer the following question.<br> Students carry out an experiment to explore the effect of different environments on blood flow using small, freshwater fish. Each fish is placed into a petri dish. A wet cotton ball is placed over its gills to allow for the diffusion of oxygen, which will keep the fish alive. The students then place the petri dish onto the stage of a light microscope so that the thinnest part of the tail is directly under the objective lens and blood can be seen flowing in blood vessels. While focusing on a capillary, students count the number of red blood cells flowing through the vessel at 5-second intervals. After monitoring the normal flow of blood for 30 seconds, the environment in the petri dish is altered in one of five different ways. Students observe and record the change in blood flow if any. After the experiment, each fish is returned to the fish tank.<br> <br> <div>Experiment 1 - Nothing is added to this petri dish.<br> Experiment 2 - Water at a temperature of <span class="katex"><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.724115em;vertical-align:0em;"></span><span class="mord"><span class="mord"><span class="mord">5</span></span><span class="msupsub"><span class="vlist-t"><span class="vlist-r"><span class="vlist" style="height:0.724115em;"><span style="top:-3.113em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mtight">∘</span></span></span></span></span></span></span></span></span><span class="mord mathnormal" style="margin-right:0.07153em;">C</span></span></span></span> is added.<br> Experiment 3 - Water at a temperature of <span class="katex"><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.724115em;vertical-align:0em;"></span><span class="mord"><span class="mord"><span class="mord">3</span><span class="mord">0</span></span><span class="msupsub"><span class="vlist-t"><span class="vlist-r"><span class="vlist" style="height:0.724115em;"><span style="top:-3.113em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mtight">∘</span></span></span></span></span></span></span></span></span><span class="mord mathnormal" style="margin-right:0.07153em;">C</span></span></span></span> is added.<br> Experiment 4 - Ethyl alcohol is added.<br> Experiment 5 - Nicotine extracted from cigarette tobacco is added.<br> <br> <table class="wysiwyg-table"><tbody><tr><td>Experiment</td><td>Initial average rate of blood flow</td><td>Final average rate of blood flow<br> </td></tr><tr><td>1</td><td>9</td><td>9</td></tr><tr><td>2</td><td>8</td><td>4</td></tr><tr><td>3</td><td>9</td><td>13</td></tr><tr><td>4</td><td>8</td><td>5</td></tr><tr><td>5</td><td>9</td><td>12</td></tr></tbody></table><br> <div>Which of the following statement is incorrect about this experiment?<br> </div></div></h2></div>
If lynxes depend mainly on hares for food, relationship between hares and lynxes is described by
![the relationship between hares and lynxes is described by<br> </h2><div class="Question_backgroundImg__6PgwQ"><img loading="lazy" src="./images/486951_b6b86a00659d4f8ba8fe3b6a7d6f4384.png" class="Question_questionImage__Ib90R" alt="image"></div></div>](# the relationship between hares and lynxes is described by<br> </h2><div class="Question_backgroundImg__6PgwQ"><img loading="lazy" src="./images/486951_b6b86a00659d4f8ba8fe3b6a7d6f4384.png" class="Question_questionImage__Ib90R" alt="image"></div></div>){kind=link}