How does a longer alimentary canal (digestive tract) create an advantage in processing plant material?
a. Increased time of digestion allows for more processing.
b. More volume means more food can be consumed.
c. It creates positive feedback for decreased enzymatic activity.
Answer: a. Increased time of digestion allows for more processing.
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Isotopes of an element are different from the most common standard form due to differences in the ____
a. atomic number b. position of the element in the periodic table c. number of neutrons in the nucleus d. number of protons in the nucleus e. size of the electron cloud
If a person overdosed on depressant-type drugs that slow down breathing, in what direction would the reaction shift? Explain your answer. 
What will be an ideal response?
another word for throat
What will be an ideal response?
When energy flows from one trophic level to another, only a small amount is actually used. Which of the following uses of energy by an organism allows for the least amount of transfer to a different trophic level?
A. growth B. excretion C. cellular respiration D. death E. reproduction