GUIDE P2-P2

Can cause the death of many animals and plants:

• extinction

• natural phenomena

• glacial periods

• volcanic eruptions

Time when the temperature of the Earth's surface decreases, and causes the migration of animals.

• extinction

• natural phenomena

• glacial periods

• volcanic eruptions

It expels ashes, rocks, lava and gravely damage on many animals and plants.

• extinction

• natural phenomena

• glacial periods

• volcanic eruptions

It expels ashes, rocks, lava and gravely damage on many animals and plants.

• extinction

• natural phenomena

• glacial periods

• volcanic eruptions

The cause when the amount of water necessary for living things to survive is not available.

• extinction

• natural phenomena

• glacial periods

• droughts

Leaves, plant and animals submerged in water, thus altering their food chain.

• extinction

• floods

• glacial periods

• volcanic eruptions

Identify the different soil layers in the image.

a

b

c

Subsoil

minerals

Topsoil

weathering

Parent Material

These are the physical properties of soil:

• temperature range
• nutrient content
• pH level
• Texture, structure, density, porosity, moisture retention, color

These are the chemical properties of soil:

• soil texture
• pH level, nutrient content, organic matter, cation exchange capacity, salinity
• temperature range
• moisture level

These are the biological properties of soil:

• Microorganisms, organic matter, and plant interactions.
• Soil pH and temperature
• Water retention and drainage
• Soil color and texture