Final answer:
Runoff is excess water that the ground cannot absorb. A soil horizon is a layer of soil with specific characteristics. An ecosystem refers to the environment in a specific area.
Step-by-step explanation:
Runoff: Runoff refers to excess water that the ground cannot absorb. It occurs when the ground is saturated and cannot hold any more water, causing the water to flow over the surface of the land. For example, after a heavy rain, water may flow down slopes or collect in puddles.
Soil horizon: A soil horizon is a layer of soil with specific characteristics. Soil horizons are formed over time due to various processes such as weathering, erosion, and deposition. Each horizon has distinct properties, such as color, texture, and composition, which can influence the growth and health of plants.
Ecosystem: An ecosystem refers to the environment in a specific area where living organisms interact with each other and their physical surroundings. It includes all the plants, animals, microorganisms, and their respective habitats in an area. Examples of ecosystems include forests, deserts, and coral reefs.
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