Critics of Douglass North's market opportunity response model suggest that surges in land sales in the Old Northwest in the 1810s, 1830s and 1850s were due to
a. improved transportation between the Old Northwest and the Northeast.
b. rising prices for hogs.
c. a reduction of British interference.
d. pervasive land speculation.
Question 2
What is the best description of the US economy from 1929-1940?
a. GNP decreased continually during the greatest Depression our nation has known.
b. The economy suffered a large drop from 1929-1933, but then grew steadily through WW II.
c. The economy suffered an initial drop, a four-year expansion and then another drop towards the end of the decade.
d. The unemployment rate increased steadily throughout the period.
A model genetic system, the fern Ceratopteris richardii
The wild radish, Raphanus sativus, has become a model for studying the mating behaviour of plants.
Male reproductive anatomy model
Dose–response relationship
Diathesis–stress model of depression.
The response of the lac operon in the absence of lactose