Question

what is soil?soil is more than just dirt! its a mix of minerals, organic matter (like dead plants and animals), air, water, and tiny living organisms that form in layers called horizons, each with its own job in helping plants, animals, and the environment. the main soil layers are:organic layer (o horizon): this top layer is made of dead leaves, twigs, and insects. its where decomposition starts, adding nutrients to the soil below.topsoil (a horizon): the dark, nutrient-rich layer where plants grow best. it has lots of organic matter, minerals and critters like worms perfect for roots.subsoil (b horizon): found below topsoil, this layer has more clay and fewer nutrients. it holds water and supports the layers above.parent material (c horizon): this layer is made of weathered rock fragments. its where soil slowly forms over time.bedrock (r horizon): the deepest layer, made of solid rock. its hard, provides no nutrients, and is tough for plants or animals to penetrate.1. what are the five main ingredients in soil?2. which soil layer is best for growing plants, and why?topsoil because3. how is the organic layer different from the parent material?

Explanation:

1. The five main ingredients are identified from the opening text of the worksheet.
2. The topsoil's suitability is explained using its described traits from the worksheet.
3. The difference is drawn by comparing the composition and role of each layer as outlined.

Answer:

1. Minerals, organic matter (dead plants/animals), air, water, and living organisms
2. Topsoil (A Horizon) because it is a dark, nutrient-rich layer with lots of organic matter, minerals, and space for worms and plant roots, which makes it ideal for plant growth.
3. The organic layer (O Horizon) is made of dead leaves, twigs, and insects, where decomposition starts to release nutrients. The parent material (C Horizon) is made of weathered rock fragments, and it is the layer where soil slowly forms over time.