. Answer these.
1. What is a natural resource? Give two examples.
2. What is the difference between renewable and non-renewable resources?
3. How do we use river water?
4. How does cutting down trees affect soil?
5. Name four minerals.
6. How was petroleum formed? Name three fuels we get from petroleum.
7. Why is coal not a mineral? *
Answers
Answer:
1.Natural resources are materials from the Earth that are used to support life and meet people's needs. Any natural substance that humans use can be considered a natural resource. Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water.
2.Renewable resources can be replaced by natural processes as quickly as humans use them. ... Nonrenewable resources exist in fixed amounts. They can be used up. Examples include fossil fuels such as coal.
3.Humans use rivers for irrigation in agriculture, for drinking water, for transportation, to produce electricity through hydroelectric dams, and for leisure activities like swimming and boating. Each of these uses can affect the health of a river and its surrounding ecosystems.
4.Further effects of deforestation include soil erosion and coastal flooding. Trees help the land to retain water and topsoil, which provides the rich nutrients to sustain additional forest life. Without forests, the soil erodes and washes away, causing farmers to move on and perpetuate the cycle.
5.calcium, phosphorus, magnesium and sodium
6.Like coal and natural gas, petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria. ... Over millions of years under high pressure and high temperature, the remains of these organisms transformed into what we know today as fossil fuels.
7.Coal is not classified as a mineral because it comes from organic materials. Coal is formed from the remains of dead plants and animals
Explanation:
Hope it helped u dear frnd....
1. Natural resources are materials from the Earth that are used to support life and meet people's needs. Any natural substance that humans use can be considered a natural resource. Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water.
2. Renewable Sources of Energy are those Sources of Energy which can be renewed naturally over time. Non-Renewable Sources of Energy are those sources which are available in limited quantity.. They are inexhaustible.
3. Humans use rivers for irrigation in agriculture, for drinking water, for transportation, to produce electricity through hydroelectric dams, and for leisure activities like swimming and boating. Each of these uses can affect the health of a river and its surrounding ecosystems.
4. Further effects of deforestation include soil erosion and coastal flooding. Trees help the land to retain water and topsoil, which provides the rich nutrients to sustain additional forest life. Without forests, the soil erodes and washes away, causing farmers to move on and perpetuate the cycle.
5. minerals :- calcium, chloride, magnesium, phosphorus, potassium, sodium, and sulfur.
6. Like coal and natural gas, petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria. ... Over millions of years under high pressure and high temperature, the remains of these organisms transformed into what we know today as fossil fuels.
7. Coal is not classified as a mineral because it comes from organic materials. Coal is formed from the remains of dead plants and animals.