Answer:
I think it's development. But can I see the choices?
Answer:
Congolese man. One of the earliest documented HIV-1 infections was discovered in a preserved blood sample taken in 1959 from a man from Léopoldville in the Belgian Congo. However, it is unknown whether this anonymous person ever developed AIDS and died of its complications.
Explanation:
Answer:
Two objects with different masses collide and bounce back after an elastic collision.
Explanation:
Iron has many uses but as far its chemical properties and the given options are concerned, following uses of iron are due to its chemical properties:
* When iron is put into fire, it produces sparks which are colored, which are not produced by mostly metals. Its purely because of the chemical properties it possess.
* When iron is placed in the water and oxygen, it rusts. When we place iron outside in the open air, when it is thrown some water, after few days you will see that iron has started rusting. This process is purely depends on the iron's chemical properties.
The type of design the school administrator is using is known an non-equivalent control group design.
The school administrator said he wants to compare records of a school that has no lockers with that of a school that has lockers. Hence, the answer to this question is non equivalent control group.
A non equivalent control group is a treatment group and a control group which are measured and compared after getting data from both groups at the beginning and at the end of a research program.
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