The fertile land which was good for growing wheat.
The answer is D, Oklahoma
The correct answer is letter B
Explanation: Contact Hypothesis says that the interaction between different groups favors the reduction of conflict and prejudice.
If we are to understand the prejudice and the conflict more broadly, they arise from the fear of the unknown of what it can cause, interacting makes it different.
The correct answer is frequency
The Doppler effect is characterized by the change in the sound frequency emitted by a source, perceived by an observer when there is relative movement. A typical example of the Doppler effect is the case of an ambulance with the siren on, during the approach or removal of an observer.
