Environmental Resources worksheet

Soil 1 what is your definition of soil what is soil

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and are washed into soil and water, including groundwater, by precipitation runoff. Soil .1 What is your definition of soil ? What is soil composed of? Why is soil important to the environment? The relatively thin surface layer of Earth's crust is soil, which consists of mineral and organic matter modified by the natural actions of agents such as weather, wind, water, and organisms. Soil is composed of four distinct parts: mineral particles, organic matter, water, and air. Vast numbers and kinds of organisms, mainly microorganisms, inhabit soil and depend on it for shelter, food, and water. Plants anchor themselves in soil, and from it they receive essential minerals and water. Terrestrial plants could not survive without soil, and because we depend on plants for our food, humans could not exist without soil either. What types of organisms are found in soil? Determine the relationship between soil and organisms. The diversity of life in fertile soil includes plants, algae, fungi, earthworms, flatworms, roundworms, insects, spiders and mites, bacteria, and burrowing animals such as moles and groundhogs. The relationship between soil and organisms is that soil organisms provide several essential ecosystem services, such as maintaining soil fertility, preventing soil erosion, breaking down toxic materials, and cleansing water. What is soil erosion? How can soil become polluted? What effect does soil erosion and pollution have on the environment? Water, wind, ice, and other agents promote soil erosion, a natural process often accelerated by human activities. Water and wind are particularly effective in moving soil from one place to another. Rainfall loosens soil particles, which are transported by moving water. Wind loosens soil and blows it away, particularly if the soil is barren and dry. Soil erosion reduces fertility because essential minerals and organic matter are removed. Erosion causes sediments and pesticide and fertilizer residues to pollute nearby waterways. What is the purpose of soil reclamation?
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Environmental Resources Worksheet ENV/100 Version 2 3 Badly eroded land can be reclaimed by (1) preventing further erosion and (2) restoring soil fertility. To prevent further erosion, the bare ground is seeded with plants; they eventually grow to cover the soil, stabilizing it and holding it in place. The plants start to improve the quality of the soil almost immediately, as dead material decays into humus. The humus holds nutrient minerals in place, releasing them a little at a time; it also improves the water-holding capacity of the soil. Forestry and Rangeland Resources and Management Strategies .1 Differentiate between government-owned lands and public lands. Which government agencies are involved with government-owned lands? What is the purpose of government- owned lands? Government-owned land encompasses all types of ecosystems, and includes land that contains important resources such as minerals and fossil fuels, land that possesses historical or cultural significance, and land that provides critical biological habitat.
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