The underground railroad, where it existed, offered local service to runaway slaves, assisting them from one point to another. ... The primary importance of the underground railroad was that it gave ample evidence of African American capabilities and gave expression to African American philosophy.
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Answer:
cross-sectional study
Explanation:
Dr. Milano compares the performance of a group of 20-year-olds, a group of 45-year-olds, and a group of 70-year-olds on several tests of fluid intelligence and several tests of crystallized intelligence. Dr. Milano's investigation BEST exemplifies a <u>cross-sectional study</u>. A cross-sectional study is a type of observational study that analyzes data from a population, or a representative subset, at a specific point in time, it involves the use of different set of people who differ in the trait of interest. For example, the effect of age on intelligence level will involve the selection of subjects across the cross-section of ages of interest.
Answer:
Nigeria, Egypt and South Africa each have 3 cities with more than 2 mill, but Nigeria has most of the 3 in population
Explanation:
Lot of grass, water in that area
▪ provide schooling and education
▪ provide protection (police)
▪ provide safety (fire departments)
▪ give a driver's license
▪ approve zoning and land use
Answer:
In this study, the dependent variable would be: <u>a. the number of participants who park in the spot they are directed to.</u>
The dependant variable is the variable to be studied, which is the number of participants that followed each directions.
