Another term for technology is

A testable prediction about a possible solution to a problem is called

The process of gathering information through the senses is called

A factor that is manipulated in an experiment to change the dependent variable is the

The process by which a liquid changes to a gas is called

The temperature of a liquid, the height of a plant, or an observation that one object is smaller than another are all examples of

Which is a more complete model of feeding relationships?

Which of the following is NOT a producer?

Nitrogen is used by

As you move from level to level in an energy pyramid, energy

Which of the following is NOT a possible sign of a physical change?

The ability of a pond to freeze over in winter is a

The measurement of an object's mass is a

Carbon ____ through the carbon cycle.

Which of the following is NOT a possible sign of a chemical change?

Three examples of physical change are

When a chunk of dry ice is at room temperature, a cloud of carbon dioxide vapor forms. The carbon dioxide is changing from a

The process that releases energy without using oxygen is

The process of sublimation

One atom of sulfur can react with exactly three atoms of oxygen to produce a molecule of sulfur trioxide. How many atoms are there in one molecule of sulfur trioxide?

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