Why might eating high on the food chain subject humans to higher concentrations of certain toxic substances than eating low on the food chain?
What will be an ideal response?
Biological magnification means that there are higher concentrations of certain compounds in higher trophic levels.
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When fat enters the duodenum, it stimulates release of which hormone?
a. amylase b. cholecystokinin c. gastrin d. secretin e. trypsin
Biofilms are the immune system's way to keep pathogens from colonizing a host
Indicate whether the statement is true or false
Which of the following is properly matched?
A. Osteoblasts and bone breakdown B. Osteocytes and initial bone formation C. Osteoclasts and initial bone formation D. Osteoclasts and bone breakdown E. Osteoblasts and cartilage formation
Darwin's theory states, in part, that individuals with certain traits have an increased competitive edge. What is the source of these traits?
A. adaptation to stress B. development over a lifetime C. inheritance D. mutation after birth E. better living conditions