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9 Cards in this Set

  • Front
  • Back

What is density

How much matter is in an object

When do you use a line graph

Change over tine

When do you use a pie graph

For percentages

When do you use a bar graph

Info by counting

How often do solar maximums occur

11 years

What are convection currents

Transfer of heat through water

What causes high phosphate, nitrate, dissolved oxygen, and pH

Animal waste, human sewage, photosynthesis, and algae

Runoff recharges

Surface water

Saturation

Recharges aquifers