Why is the top box correct? \"The pull mechanism has long been favored by many s

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Why is the top box correct? "The pull mechanism has long been favored by many scientists" so why would that top box be true?

Section 4 of 5 Review Mode: Question 17 of 20 Questions 17 and 18 are based on this passage Consider each of the choices separately and select all that A tall tree can transport a hundred gallons of water a day from its roots deep underground to the treetop. Is this movement propelled by pulling the water from above or pushing it from below? The pull mechanism has long been favored by most scientists. First proposed in the late 1800s, the theory relies on a property of water not commonly associated with fluids: its tensile strength. Instead of making a clean break, water evaporating from treetops tugs on the remaining water molecules, with that tug extending from molecule to molecule all the way down to the roots. The tree itself does not actually push or pull; all the energy for lifting water comes from the sun's evaporative power apply. Which of the following statements is supported by the passage? The pull theory is not universally accepted by scientists. The pull theory depends on one of water's physical properties. The pull theory originated earlier than did the push theory.

Explanation / Answer

The top box is correct because it is stated in the passage that the pull theory has been favoured by most scientists and not all. Inorder to be universally accepted the theory should be favoured by all scientists. Therefore the statement that pull theory is not universally accepted by scientists is true.

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