Humanities
Science
Math
100

This system of social classes based on birth developed as a part of ancient Indian society and has evolved over many centuries. This system became closely linked to Indian notions of a proper society and with Indian notions of purity. This fixed social class system into which a person is born is called....

The caste system

100

Which element is found in all living things, plants and animals?

Carbon

100

What are the coefficients for 2x - 3y + 17 

2 and -3
200

What is the name of scientists who study the physical materials of Earth itself, such as soil and rocks?

Geologists

200

Made up of protons and neutrons, this part of the atom contains nearly all the mass of an atom?

Nucleus

200

What is a vertical angle?

Two angles that are across from each other and congruent./Two angles that share a vertex.

300

What is the name for soldiers who fight while riding horses?

Cavalry

300

How many elements on the periodic table are found naturally?

92

300

Prime factorization of 50

5* 2

400

What is the name for an area of sediment - soil or minerals carried by water - that is deposited at the mouth of a river?

Delta

400

What is the most abundant element in the universe?

Hydrogen

400
What is the least common multiple of 12 and 15

60

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