Help Aileen wants to see which type of pencils stays sharp longer, wooden pencils or mechanical pencils. She has observed both types of pencils being sharpened throughout the day. What is the next step if Aileen wants to conduct an experiment determining which type of pencil stays sharp longer?
a. Aileen must form a hypothesis.
b. Aileen must form an explanation.
c. Aileen must conduct an experiment.
d. Aileen must conduct a lot of research.

1of the following choices, which one best describes one way that christianity came to east africa? a. christians traveled in caravans through the sahara desert and introduced the people of mali to a new religion. b. christian traders from the mediterranean interacted with the people of axum. c. christian military from west africa traveled across the continent to bring their religion to the people of east africa. d. christian rulers from asia traveled to east africa to bring their religion to the people. 2 which trade item from outside the region did west africans need most? a. gold b. camels c. salt d. iron

What film is responsible for the creation of the pg-13 rating?

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.