Del watches as his mother spins the wheels on his toy truck and then tries to repeat the behavior. When he attempts to do so, his mother smiles and nods at him. Researchers interested in operant conditioning would say that Del's mother has his behavior.

What would a student most likely use if he or she wanted to consult a secondary source

Using your time line, your analysis of images from the library of congress’s website, and your textbook, write a letter of 3-5 paragraphs for a time capsule to be opened in 200 years that describes the characteristics of texas from the time of the civil war to the late 1800s. be sure to include information on texas’s government, economy, and people. be sure to use specific evidence to support your writing. cite your textbook using specific page numbers, as well as any images you describe. edit your work for proper grammar, punctuation, and spelling before submitting. hurry im short on time

Which option below best represents what is included in the calculation of the united states gross domestic product (gdp)? a. 1 b. 2 c. 3 d. 4