ORGANISMS AND THE ENVIRONMENT_day one
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Green crabs carry a parasitic worm that can infect organisms that prey on crabs. Which organism is most likely to be infected by this parasite? *
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The African Savanna is a grassland scattered with shrubs and small trees. The organisms that live in the savanna are shown below. Which two types of organisms have a producer-consumer relationship in this African Savanna? *
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A scientist named Joseph Connell studied two species of barnacles on the shore of a Scottish island. In the area between the average tide and the neap high tide, he found that the population of Species A was smaller than that of Species B. He removed Species B from one area but left both Species A and B in a similar area. The graph below shows the results of this study. Based on the data, which hypothesis was Connell most likely testing? *
25 points
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Black walnut trees produce a nontoxic chemical that becomes highly toxic when it is exposed to air or soil. How does this chemical help black walnut trees compete with plants growing nearby? *
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