What did the sumerians use to develop their calendar

A. The shape of the stars

B. The brightness of sun

C. The cycles of the moon

What are some of the challenges caused by a natural monopoly? Check all that apply.

Who claims that the social contract forms an artifical person?

Which might happen the longer the Rocky Mountains exist?

As young Javier gets off his school bus, he runs to his mother and proudly shows her the book he read at school today. Which of the following Erikson's childhood stages is Javier demonstrating?

When andrew smelled chocolate chip cookies, he recalled the first time he baked with his mom?

Peggy loves her new job as a media planner mainly because she feels that her superiors are fair to her despite her being a new employee. She feels that she is treated at par with other employees of the firm.

Which of the following was not a weakness of the articles of confederation (1781-1789) ?

Tre has recently lost his job. Because he wants to be sure to vote for a senator who will try to expand unemployment benefits, he has tuned in to numerous news reports about the beliefs and promises of the candidates.

Inadequate hydration may increase risk for

Give three examples of obligations of citizenship.