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1)A species of seaweed and coral are in competition for sunlight and space. Which of the following best describes this relationship? Harmful, because the coral will eat the seaweed Harmful, because there will not be enough sunlight and space for both of them Helpful, because they will share the space and both benefit from the interaction Helpful, because the coral will benefit and the seaweed will not be affected2.)Both cod and haddock are important commercial fish species. Why would it be important for scientists to know more about how these species interact and what they eat? Because no other species interact with them Because ecological forecasts only work for predators Because species in an ecosystem are interdependent Because they both prey only on herring3.)Which of the following best describes the term parasitism? One species uses another species as a food source, typically killing it. One species uses another species as food or shelter causing harm. One species takes food or resources away from another species. One species can photosynthesize or otherwise create its own food.4. )The imperial shrimp, Periclimenes imperator, is sometimes seen riding on the back of large sea cucumbers. The shrimp gets to move around to areas with food and expend very little energy, while the sea cucumber is unaffected. What type of relationship is this, and why? Commensalism, because one species benefits Mutualism, because both species benefit Parasitism, because one species is harmed Predation, because one species dies5)A type of algae called zooxanthellae lives inside a coral polyp. It photosynthesizes and makes food. The algae has a safe place to live, and the coral benefits from the extra food. What type of relationship is this? Commensalism Mutualism Parasitism Predation

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