Q: Does "The metal is hard and brittle at most temperatures but becomes malleable between 100 and 150 C." provide a valid answer to "What happens to zinc when it is manipulated to the temperatures between 100 and 150 Celsius?"?
A: yes

Q: Does "Thus, a suitable environment was created in which it became possible to question scientific doctrine, in much the same way that Martin Luther and John Calvin questioned religious doctrine." provide a valid answer to "The focus on learning in the 12th century is referred to as what?"?
A: no

Q: Does "Dogs are highly variable in height and weight." provide a valid answer to "Dogs show an extreme range in what two characteristics?"?
A: yes

Q: Does "The Desert Land Act of 1877 was passed to allow settlement of arid lands in the west and allotted 640 acres (2.6 km2) to settlers for a fee of $.25 per acre and a promise to irrigate the land." provide a valid answer to "How much was the charge per acre at first?"?
A:
yes