Problem:Passage: A spruce is a tree of the genus Picea / paɪˈsiːə /, a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth. Spruces are large trees, from about 20 -- 60 m (about 60 -- 200 ft) tall when mature, and can be distinguished by their whorled branches and conical form. The needles, or leaves, of spruces are attached singly to the branches in a spiral fashion, each needle on a small, peg-like structure. The needles are shed when 4 -- 10 years old, leaving the branches rough with the retained pegs (an easy means of distinguishing them from other similar genera, where the branches are fairly smooth).

Question: Based on this passage, how many different types of spruce trees are there?
Solution:OK... The relevant information is: A spruce is a tree of the genus Picea / paɪˈsiːə /, a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth.
about 35 species.

Problem:Passage: Arrowhead Mountain Spring Water takes its name from a natural mark in the San Bernardino Mountains that is shaped like a giant arrowhead. The arrowhead is naturally barren; it is not manicured in any way. Native American legend says the formation was burned into the mountain by the fall of an arrow from Heaven, showing the way to the healing hot springs. Nearby cold springs on Strawberry Creek in the San Bernardino National Forest are the original source and namesake of Arrowhead water.

Question: Based on this passage, where does arrowhead mountain spring water come from?
Solution:OK... To answer the above question, the relevant sentence is: Nearby cold springs on Strawberry Creek in the San Bernardino National Forest are the original source and namesake of Arrowhead water.
cold springs on Strawberry Creek in the San Bernardino National Forest.

Problem:The Population Registration Act of 1950 required that each inhabitant of South Africa be classified and registered in accordance with his or her racial characteristics as part of the system of apartheid.

Answer this question: what was the purpose of population registration act?
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
OK... The important part for answering this question is: The Population Registration Act of 1950 required that each inhabitant of South Africa be classified and registered in accordance with his or her racial characteristics as part of the system of apartheid.
required that each inhabitant of South Africa be classified and registered in accordance with his or her racial characteristics as part of the system of apartheid.