The function of lacteals is to
A. ensure that blood does not flow backwards.
B. regulate blood pressure.
C. regulate the heartbeat.
D. carry dead blood cells back to the spleen for destruction.
E. absorb fat from the digestive tract.
Answer: E
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Which of the following is not a major element of a microbial cell?
A. Hydrogen B. Carbon C. Oxygen D. Copper E. Nitrogen
A chain of round bacteria would be called:a
spirilla. b. diplococci. c. bacilli. d. streptococci. e. streptobacilli.
A single oak tree can support hundreds of beetles, caterpillars and other primary consumers. This would be best represented by
A. an inverted pyramid of biomass. B. a pyramid of energy. C. a pyramid of biomass. D. an inverted pyramid of numbers. E. a pyramid of numbers.
Two human activities, burning fossil fuels and ________, are important causes of the increase in atmospheric carbon dioxide
Fill in the blank(s) with correct word