Questions

Bookkeeper is the only English word that has three consecutive double letters.

An invention that improved safety for railway passengers is Air brakes. With the use of air brakes using compressed air, become more effective by preventing many train accidents.

It returns -1

At the center of the sun, nuclear fusion converts hydrogen into helium, energy, and neutrinos. Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons).

An ideal habitat with unlimited resources is associated with Exponential growth.

The defining right of a representative democracy is the ability to vote for representatives to make decisions on their behalf.

In democratic government, elections are held regularly, in which voters vote for someone who will serve in the levels of local, state, and federal government.

The Declaration of Independence express Legal rights of citizens.