A natural, meandering, river channel is modified into a more or less straight and smooth, canal-like channel. Which of the following statements is correct? Group of answer choices The straight channel has a higher gradient and more friction than the natural channel. The natural channel had a lower gradient and less friction than the modified channel. The natural channel had a lower gradient and higher friction than the straight channel. All of the above statements are true.

Which statement best completes the diagram of the ways the different branches of government can limit each other's powers?

Acriterion for waiving informed consent is that, when appropriate, subjects are provided additional pertinent information after the study. in which of the following studies would it not be appropriate to provide subjects with information about missing elements of consent: a study in which researchers told students that they would be given a quiz after reading some study materials when the researchers did not intend to use a quiz, but were attempting to focus subjects’ attention on the material.a study in which subjects were told that they performed in the third quartile on an anagram task when in reality students were randomly assigned scores that were not related to their actual performance.a study in which subjects were assigned to study activities based on an undesirable or unflattering physical characteristic as assessed by members of the research team.a study involving decision-making games in which subjects were led to believe that they were interacting with another student in another room, but were actually interacting with a computer programmed to provide consistent responses to all subjects.

The principle that the geoglical processes that we see today have occurred through out earths history is called