What are the classes of nutrients?
What will be an ideal response?
lipids, carbohydrates, and proteins
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You are conducting a long term study of ecosystem functioning in a freshwater lake. You and your field assistants gather data for many biotic and abiotic factors, including species diversity, water and benthic quality, and turbidity. Over the ten years of your study, you find that the abundance of water lilies is correlated with several other factors. When water toxicity and turbidity are high and water pH is abnormally low, water lilies quickly become scarce, followed by periods where fish, amphibians, and water birds are also scarce or absent. In years water nutrient levels are very high, water lilies quickly become abundant, followed by years where wading birds are scarce. From these data, you conclude that water lilies are __________.
A. an umbrella species. B. a keystone species. C. an endemic species. D. a flagship species. E. an indicator species.
Suppose that you have discovered a new mutant in Drosophila melanogaster. The trait is known to be sex linked
Which crosses should you perform to determine if the mutant trait is recessive or dominant?
What will be an ideal response?What is the likely impact of this toxin on the resting potential of a neuron?
A. The resting potential will require more energy to maintain. B. The resting potential will be more negative. C. It will destroy the ion gradients necessary for the resting potential. D. The resting potential will promote action potentials with a larger depolarization. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about sodium and potassium? What other information is related to the question? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What is the function of phloem?
a. it helps the plant prevent desiccation b. it carries water and minerals c. it carries photosynthetic sugars d. it allows for gas exchange e. it does more than one of these