When bobby is hungry, tired, and thirsty, he resolves this by getting food, water, and sleep. these are examples of "Primary reinforcement".
Primary reinforcement is the most fundamental type of support. These reinforcers satisfy the essential natural drives in a living being. Sorts incorporate sustenance, water, air, rest, sex. Essential support, over the long haul, helps in the survival of species.
The answer you are looking for is farming !
Answer:
The woman who performed an open-air concert in front of the Lincoln Memorial in the spring of 1939 after the Daughters of the American Revolution barred her from singing in their Constitution Hall was Marian Anderson.
Explanation:
Marian Anderson was an American contralto who became the first American opera star and established herself as one of the greatest concert performers of the twentieth century, excelling in a varied repertoire ranging from lied to American gospel. The best-known event in the singer's long career was her historic recital at the foot of the Lincoln Memorial in Washington in 1939, where she drew a crowd of 75,000 in a musical protest against racist attitudes suffered by the artist.
Answer:
1. parsimonious,
2. rigorously
3. evaluated
Explanation:
There are several principles behind in scientific explanations, including PARSIMONIOUS, which refers to using the fewest number of assumptions to reach a solution, RIGOROUSLY which refers to using falsifying methods to test hypotheses, and EVALUATED, which refers to whether the explanation can be verified or lead to specific predictions.
Hence, the correct answers are: PARSIMONIOUS, RIGOROUSLY and EVALUATED
