Which statement best explains why carbon is present in so many kinds of molecules?

a. it can become iron

b. it has valance electrons

c. it can form four covalent bonds

d. It is abundant on earth

What impact did the airplane and tank have in World War I? provided the necessary protection for the convoy system improved trench warfare tactics Introduced the concept of mechanized warfare

How did the Supreme Court rule regarding the Judiciary Act of 1789 a. It was unconstitutional. b. Madison acted correctly. c. The Senate could enforce it. d. The President could enforce it

How did progressives seek to improve working conditions

Which of the following factors led to the development of ancient civilizations? climate masion agriculture location

In the beginning, Joseph McCarthy focused an investigation into communism's influence on what area of American life? entertainment and broadcasting travel and tourism government and security finance and investment

When Justinian I became emperor, what were the three things he set out to do during his reign?

What was the result of the attack on Pearl Harbor? A. Germany and Italy revoked their military commitment to Japan. B. Congress was divided about what action to take against Japan. C. Japan's navy suffered severe losses in the attack. D.

Which progressive era president promised a square deal?

What was true about the constitution of the confederate states of america (csa) ?

Which of the following effects was a direct result of domesticating animals? A. The food supply was reduced. B. Disease was spread. C. The land was damaged. D. Animal sacrifices increased.