Weathering and soil formation

Ice wedging and root action are examples of 

• mechanical weathering
• chemical weathering
• leaching 
• carbonation

potholes in streets are caused by

• carbonation
• hydrolysis
• oxidation
• ice wedging

rusting is caused by 

• carbonation
• oxidation
• hydrolysis
• nitric acid

Plants that produce weak acids that can wear away a rock's surface are

• limes
• mushrooms
• bacteria
• mosses

The parent material of soil is 

• limestone
• bedrock
• oxygen
• fertlizer

The chemical elements in soil that are needed by plants are 

• humus
• fertilizers
• nutrients
• pH

The texture of a soil is determined by the soil particles'

• shape
• mass
• size
• chemical makeup

Potassium, phosphorus, and nitrogen in soil provide plants with 

• humus
• nutrients
• support
• acids

The reaction of water with other substances is 

• carbonation
• acid rain
• oxidation
• hydrolysis

Rocks containing a lot of quartz

• weather slowly
• weather quickly
• form most soil
• do not weather