It's false. The mid-nineteenth century is the mid 1800's.
Answer:variable - interval
Explanation: In the this scenario, The humanities instructor is using a variable-interval schedule of reinforcement. The instructor used the word 'surprise' meaning the time and date of the test isn't fixed and the quizzes will come up at unpredictable time intervals. This kind of reinforcement results in a steady response rate as it keeps students on their toes simply due to the fact that they have no idea of when the quizzes are coming up.
Homo erectus and Neanderthals lived at the same time as homo sapiens. Neanderthals eventually died off and homo erectus may have evolved into homo sapiens
Answer:
Jackson allegedly defied the Supreme Court over Worcester v. Georgia (1832), announcing, “John Marshall has made his decision now let him enforce it.” The case revolved around Georgia's attempt to apply state laws to Cherokee lands.
Explanation:
<em>I hope u get it right!</em>
