Answer:
A
Explanation:
The independent variable is temperature since it is the variable that is changed or controlled while the dependent variable ( test score of students) is the variable which is tested and measured as a result of the change in temperature
Many African Americans left sharecropper jobs in the south to own their own land in Kansas.
A primary source is a document or account created from the time under study.
A secondary sources is a document or account created or written after the time
under study. Usually by people who study in whatever subject that is under study.
The citizens of the United States choose their next president.
