Which of the following bodies of water best represents a lotic ecosystem?
A) salt pond
B) marsh
C) oxbow lake
D) stream
D
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Non-coding DNA regions within a gene are referred to as
A. introns. B. exons. C. templates. D. transposons. E. pseudogenes.
Why have plants been implicated in the Ordovician and Devonian glaciations, but not the Proterozoic glaciations?
A. Proterozoic plants used anoxygenic photosynthesis. B. Proterozoic plants had simple root structures that did not increase rock weathering. C. Land plants had not yet evolved during the Proterozoic. D. The non-vascular plants present during the Proterozoic did not contribute to global nutrient cycles. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about glaciation? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? 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?
In zygomycetes such as Rhizopus, the zygospore is haploid
____________________ Indicate whether the statement is true or false.
Systemic lupus erythematosus (SLE or lupus) is distinct from other autoimmune disorders because
A) it is also a hypersensitivity disorder. B) it involves an antibody response. C) multiple organs and tissues are affected. D) it may be triggered by an infection. E) there is a genetic predisposition.