What do you think?
How could this be?
Are you sure about that?
When did this happen?
Can this be any stranger?
100

Single-celled microorganisms.

What is bacteria? 

100

A soft, waxy compound found in the body and in the food we eat.

What is Cholesterol?

100

Within a cell or cells.

What is Intracellular?

100

To draw away moisture and convert into vapor.

What is Evaporate? 

100

A state of balance.

What is Equilibrium?

200

Total mass of all the living matter within a given area.

What is biomass? 

200

To weaken the strength of a solution.

What is dilute? 

200

The production of a chemical compound within the body.

What is biosynthesis? 

200

A ___ is a state of matter that is not fixed in shape or volume but tends to expand.

What is gas?

200

Relating to a line.

What is linear?

300

Having a pH less than 7.

What is acidic? 

300

The field of science that concentrates on relationships between organisms and their environments.

What is ecology? 

300

An oily/waxy organic compound that cannot be dissolved in water.

What is lipid? 

300

A plant-eating organism.

What is Herbivorous?

300

The middle value in a set of ordered numbers.

If the set of numbers is even, it is the average (mean) of the two middle values.

What is median? 

400

The temperature a liquid must be to change states from liquid to gas.

What is boiling point? 

400

The force of attraction between two bodies of mass.

What is gravity?

400

An organism of microscopic or very small size.

What is Microorganism?

400

An angle inside of a shape (that is, all of the interior angles in a triangle have a sum of 180 degrees).

What is Interior Angle? 

400

The wearing away of an object by outside forces, like wind or water.

What is Erosion?

500

Brain swelling.

What is Cerebral Edema?

500

The temperature that a fuel must reach before combustion can begin.

What is Ignition Temperature?

500

The temperature at which a solid softens into a liquid.

What is melting point? 

500

(adj.) refers to an angle that is less than 90 degrees; (adj.) refers to a triangle with angles that are all less than 90 degrees; sharp; quick and precise; intense.

What is acute? 

500

A state of balance.

What is Equilibrium?