Answer: Andrew Carnegie (1835-1919) was one of the most successful businessmen and most recognized philanthropists in history. His entrepreneurial ventures in America's steel industry earned him millions and he, in turn, made great contributions to social causes such as public libraries, education and international peace.
Explanation:
After world war 1 (i need 20 characters)
Answer:
The primary and secondary responses are equal
Explanation:
Primary and secondary are considered to be two responses of immune to the antigen.
Primary response occurs at the first encounter between the antigen and immune. This response can be as long as 14 days depending on the antigen category.
There are two cells in the body that act as a defensive system and antibodies against antibodies.
the secondary response occurs when a person exposed to the same antigen repeatedly
Answer:
Classroom wall hangings
Explanation:
The independent variable in a research is that variable that the researcher wants to use to find out if it affects the dependable variable. The researcher manipulates the independent variable to see if it brings any change to the dependent variable. In this example, the researchers wants to test if classroom wall hangings can increase GPA, hence he wants to see if manipulating the classroom wall hangings can have an impact on the GPA of students.
