The big bang theory states that .

Which phrase best completes the sentence?

a. the universe will explode

b. the universe began as a small, dense ball of matter

c. the universe cannot expand anymore

d. the universe is contracting

PLEASE HURRY

50 points in at least two paragraphs, discuss the differences between the principles of republicanism and democracy. explain whether you think the united states is more of a republic or a democracy. refer to at least one example from the constitution.

How did the growth of railroads american businesses expand

What are three voluntary behaviors that is not control by results?