Biospheres and ecosystems

What are the components of the biosphere?

• Atmosphere, Hydrosphere, Lithosphere

• Atmosphere, Biosphere, Hydrosphere

• Hydrosphere, Biosphere, Lithosphere

• Atmosphere, Lithosphere, Biosphere

What is the atmosphere composed of?

• Nitrogen, Oxygen, Carbon Dioxide

• Oxygen, Carbon Dioxide, Helium

• Nitrogen, Carbon Dioxide, Argon

• Oxygen, Helium, Argon

What does the lithosphere consist of?

• Living organisms

• Atmospheric gases

• Water bodies

• Soil and rocks

What percentage of the Earth's surface is covered by water?

• 25%

• 50%

• 90%

• 75%

What is the study of ecosystems known as?

• Ecology

• Chemistry

• Geology

• Biology

What are the abiotic components of an ecosystem?

• Physiographic factors, Edaphic factors, Light

• Water, Wind, Atmospheric gases

• Animals, Bacteria, Fungi

• Temperature, Soil, Plants

What is the aspect referring to in physiographic factors?

• Water-holding capacity

• Soil type

• Height above sea level

• Slope direction

Which type of soil has a high water-holding capacity?

• Clay

• Loam

• Gravel

• Sand

What is the main source of oxygen on Earth?

• Volcanic eruptions

• Forest fires

• Photosynthetic organisms

• Industrial activities

How is free nitrogen converted into nitrates in the soil?

• Nitrogen fixing bacteria

• Lightning

• Denitrifying bacteria

• Decomposers