Which type of succession occurs in an area previously occupied by living things that are disturbed and then recolonized?

• Quaternary succession
• Primary succession
• Secondary succession
• Tertiary succession

What are the non-living features of the environment called?

• Biotic factors
• Living factors
• Organic factors
• Abiotic factors

What is the mixture of rocks, minerals, air, water, and organic matter that provides an environment for living organisms called?

• Sediment
• Mud
• Compost
• Soil

What is the top layer of soil, rich in organic material needed by plants, called?

• Bedrock
• Topsoil
• Parent material
• Subsoil

What is the largest particle making up the soil?

• Clay
• Sand
• Silt
• Gravel

What is the process by which one community of organisms slowly replaces another, leading to a more complex and stable ecosystem?

• Ecological succession
• Adaptation
• Evolution
• Natural selection

Which of the following is NOT a component of soil?

• Organic matter
• Air
• Water
• Plastic

Which of the following is NOT a biome?

• Desert
• Rainforest
• Tundra
• Meadow

What are living and once-living features of the environment called?

• Inorganic factors
• Non-living factors
• Abiotic factors
• Biotic factors

Which of the following is NOT a living or once-living feature of the environment?

• Animals
• Rocks
• Bacteria
• Plants