I believe the answer is Shaping.
Shaping is a reinforcement technique which use a reward that given gradually after the subject is showing a certain desired traits.
On parakeets, this could be done by giving them a food reward everytime they move their head closer to the place where we want it to be (closer to your cheek)
Answer: School Museums
Explanation: In 20th century, new instructional media appear for the first time and it fits in the context of school museums. It should be noted that the instruction media didn't fits in the contexts of Classrooms in K-12 schools, Science classes and In higher education institutes.
<span>There are important things to do after you have your gallbladder removed to ensure that you have a good recovery. The first few days after surgery you should add foods back gradually into your diet. You should stick with clear liquids, broths and gelatin. People should avoid fried and high-fat foods. High fat foods tend to induce pain, bloating and diarrhea. Gas producing foods such as breads and cereals should also be introduced slowly back into the diet. You should contact your doctor if you start having any complications such as, severe pain, nausea, vomiting, or the inability to have a bowel movement.</span>
It was to expand the government’s ability to identify terrorist
The city had more job opportunities in factories
