Which of the following are the water conducting cells of the xylem?
A. parenchyma and sieve tubes
B. tracheids and parenchyma
C. vessels and tracheids
D. vessels and parenchyma
E. sieve tubes and tracheids
Answer: C
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the __________ and back to the ocean.
a. atmosphere; clouds b. atmosphere; freshwater ecosystems c. clouds; atmosphere d. freshwater ecosystems; atmosphere
Jacob von Uexkell used the term Umwelt to explain that animals living in ____ can experience ____ sensory worlds
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What produces the acidic pH of some mine runoff?
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