An expanding population in the United States and the world has caused an increased demand for food

Indicate whether the statement is true or false.


T

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Water also moves throughout the plant because, as it evaporates from leaf surfaces though ____, its

natural tendency to stick to itself causes it to move from cell to cell and outside the plant.

a. stomata c. diffusion b. chlorophyll d. root hairs

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What schematic symbol is shown in the accompanying figure?



a. Normally Open Float Switch
b. Normally Closed Float Switch
c. Normally Open Held-Closed Float Switch
d. Normally Closed Held-Open Float Switch

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Many members of which group(s) of soil microorganisms are anaerobic heterotrophs?

A) actinomycetes B) bacteria C) fungi D) both A and C E) all of the above

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Which type of electrode does not have a heavy gas shield, mainly depending on the slag to protect the molten

metal, therefore requiring a short arc be maintained? a. Fast-fill b. Fill-freeze c. Fast-freeze d. Low-hydrogen

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