Answer:
This is an example of an experimental design.
Explanation:
Experimental design in research involves controlling the variables in order to prove the hypothesis. In an experimental design there must be an experimental group, that in this case is the group that received an herbal supplement, and a control group, that was only administered placebo. By having a control group, both groups can be measured and compared at the end of the experimental phase, to measure the influence of the independent variable.
Answer:
For Martin Luther King Jr.
Explanation:
He inspired everyone with his "I have a dream" speech and helped organize the march on Washington, an assembly of over 200,000 protestors and led to the Civil Rights Act of 1964. He gave hope to the people. He also modeled sound leadership to the African American civil rights movement.
Those are some contributions he made if you'd like a short answer :)
It was a picture of Fort Peck Dam, taken by Margaret Bourke-White.
Do you mean Sitters fort?
Compaction and cementation presses the layers and sticks the particles together. This creates sedimentary rock. Rocks underground get heated and put under pressure, and are changed into metamorphic rock. ... When the magma (lava) cools quickly, it turns into solid extrusive igneous rock.
