In this bottom section of the rock layers in the Grand Canyon, the oldest rock is shown in these angled layers. Explain what happened in terms of plate tectonics and other conditions to create this section (from the Vishnu Schist, Zoroaster Granite, Igneous intrusion, Bass Limestone, Hakatar Shale and the Shinumo Quartzite)

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

If forces acting on an object are unbalanced. true or false