Habitats & Distribution
Factors Affecting Soil
Types of Soils
Soil Horizon
Importance of Soils
100
Where would this plant most likely to grow (sunflower)
Chernozem
100
The composition of the original rock is an example of this kind of soil-forming factor.
Abiotic Factor
100
Fertile black soil found in the Danubian Plain
Chernozem
100
This top layer of soil, rich in decomposing leaves and nutrients
O Horizon / Organic Layer
100
Soils are considered one of Bulgaria’s most valuable natural _____
Resources
200
Where would this plant most likely to grow (grapes)
Cinnamon Soil
200
Vegetation and microorganisms are part of these living, or ____ factors.
Biotic Factors
200
Common in mountain regions; moderately fertile and brown in color.
Brown Forest soils
200
This layer consists mostly of partially broken rock and very few nutrients
C Horizon
200
Soils support biodiversity by helping these living things grow
Plants (and Animals)
300
Where would this river most likely be next to 
Alluvial Soils
300
Temperature, rainfall, and wind are all part of this major influence on soil formation.
Climate
300
Found in high mountain pastures and meadows.
Mountain - Meadow soils
300
Most plant roots grow in this layer, known for being dark and full of humus
A Horizon / Topsoil
300
Without soils, this essential human activity would be impossible
Food Production or Agriculture
400
Where would this biodiversity most likely to grow 
Brown Forest
400
Human actions like irrigation and fertilization can improve this quality of soil.
Fertility
400
Heavy clay soil in lowlands, good for cereals but hard when dry
Smolnitsa soils
400
Minerals like iron and clay accumulate in this subsoil layer
B Horizon
400
Soils (as ores) are described as vital and ____
Limited / Non-Renewable
500
On which soil can you find this animal mostly(wild cow)
Mountain-Meadow Soils
500
Overuse of fertilizers and industrial pollution can lead to this negative environmental effect.
Pollution or Degradation
500
Found along river valleys, rich in nutrients and good for crops
Alluvial soils
500
The lowest soil layer, made of solid rock, slowly breaks down to form new soil
R Horizon / Bedrock
500
Soils play a key role in slowing climate change by storing this greenhouse gas
Carbon Dioxide