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Q:

# What is a double bubble map?

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A double bubble map is a type of thinking map. According to Thinking Maps, double bubble maps are a tool to compare and contrast two different items or points.

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A double bubble map is much like a Venn Diagram. The two center circles hold the items being compared. The outside bubbles hold items, descriptive phrases and other factors that describe only the object to which they are connected. The bubbles on the inside that connect to both center circles contain information that pertains to both the items in the center circles. As a result, the double bubble map shows areas in which the two items differ and others in which they share similar traits.

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## Related Questions

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A density-dependent factor is a limiting factor that depends on the population size. These factors are only effective when the population reaches a certain density. Examples of density-dependent factors include competition, parasitism, disease and predation.

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Determining an inequality from a graph requires determining the line that forms the border and including the appropriate inequality sign. The shading of the graph along with the type of line indicates the sign to use.

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To graph a math equation, acquire some graphing paper, draw x and y axes, and decide whether the equation is linear or non-linear. Approach the problem by finding the slope of the linear equation or using a table for a non-linear one.