In stream and river ecosystems, the grazing food chain is of minor importance compared with the detrital food chain
Indicate whether the statement is true or false
TRUE
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As a couple, you have been trying to get pregnant for a few years, but there appears to be a medical cause for the infertility. After a full checkup, your doctor tells you that there is scar tissue in the uterine tubes. What disease is the most likely cause of this problem?
A. Gonorrhea B. Trichomoniasis C. Syphilis D. Leptospirosis
Fossil fuels
a. can be recycled. b. include biofuels. c. are the organic remains of ancient autotrophs. d. are still being generated by living autotrophs. e. are the remains of dinosaurs and ancient autotrophs.
Caterpillars of the same species on a large leaf each chew as much leaf as they can. This is an example of
A. commensalism. B. amensalism. C. interference competition. D. exploitation competition. E. interspecific competition.
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.