Answer:
A) fixed-ratio
Explanation:
The fixed ratio is the ratio that represents the reinforcement schedule. Here the delivery of the reinforcement could be done when the number of responses is completed and finished
Since in the given situation, it is mentioned that a toddler has learned about the jack and it wont be operate till she turns the hand crank approx and exact 10 mins
So this situation represents the fixed ratio
hence, the correct option is A
Answer:
Beginning in the 1880s, an era of qualitative immigration restrictions began as certain types of immigrants were barred: prostitutes, workers with contracts that tied them to a particular employer for several years, and Chinese. In the 1920s, quantitative restrictions or quotas set a ceiling on the number of immigrants accepted each year.2
Immigration law changed in 1965. Qualitative and quantitative restrictions were maintained, but national origin preferences that favored the entry of Europeans were dropped. U.S. immigration policy began to favor the entry of foreigners who had U.S. relatives and foreigners requested by U.S. employers. During the 1970s, the origins of most immigrants changed from Europe to Latin America and Asia: U.S. immigration has occurred in waves, with peaks followed by troughs (see figure). The first wave of immigrants, mostly English-speakers from the British Isles, arrived before records were kept beginning in 1820. The second wave, dominated by Irish and German Catholics in the 1840s and 1850s, challenged the dominance of the Protestant church and led to a backlash against Catholics, defused only when the Civil War practically stopped immigration in the 1860s.
The third wave, between 1880 and 1914, brought over 20 million European immigrants to the United States, an average of 650,000 a year at a time when the United States had 75 million residents. Most southern and eastern European immigrants arriving via New York’s Ellis Island found factory jobs in Northeastern and Midwestern cities. Third-wave European immigration was slowed first by World War I and then by numerical quotas in the 1920s.
Explanation:
Answer:
"Cause i dont know what to do its not like i get to chose"
yeuisjfdhcjnwkasq
Explanation:
The Persians influences the most culture in Iran.
The answer is "Vertigo without hearing loss".
<span>
Patients who endure different scenes of serious vertigo without hearing misfortune likely have what is known as intermittent vestibulopathy. These assaults of vertigo travel every which way, and last from minutes to hours. This internal ear issue is along these lines like Ménière's Disease, however with no hearing misfortune or noise in the ear.
</span>