Question:

Soil erosion can be prevented by

Updated On: Sep 12, 2022
  • overgrazing
  • afforestation
  • deforestation
  • drought

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The Correct Option is B

Solution and Explanation

Soil erosion is the removal of the top layer of soil. Soil erosion occurs due to heavy rainfall and floods. Soil erosion can be prevented through afforestation because it is a process of planting new trees. The establishment of a forest in an area where there were no trees previously is called afforestation. Trees help prevent soil erosion by strengthening the soil.

Steps to prevent soil erosion:

  1. Planting more trees as roots of trees and plants holds the soil and does not allow the soil to wither off.
  2. Using fiber logs to prevent soil from moving.
  3. Drainage system to enable proper water flow in water collecting systems.
  4. Implementing mulch matting.
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Concepts Used:

Organisms and their Environments

Ecology is the branch of biology that involves the study of the interactions that takes place between an organism and its environment. Any biological organization consists of 4 levels, namely, Organisms, Populations, Biomes, and Communities.

Organisms:

An Organism is an attached living system that lives in an environment. They are able to retain specific behaviours and structure such as bacteria, fungi, plants, animals, and humans. A population is formed by the collection of all these organisms. The collection of population forms a community that helps in the operation of ecosystems.

Environment:

The study of the interaction of organisms in an area with the surrounding environment is Ecology. This interaction constitutes an overall adaptation of the organisms to their environment that also includes the continuity of species.

The environment comprises of both biotic (living things) and abiotic components (non-living things)

Food Chain:

Food Chain is the transfer of food energy from the plant source through a series of organisms that consume and are consumed.

Grass(Producer) → Deer(Herbivore) → Tiger(Carnivore),  Grass(Producers) → Insect(Herbivores) → Frog(Carnivores) → Snake(Secondary Carnivore).

Food Web:

Food web is the interlocking pattern of multiple food chains in the ecosystem. In this, many food chains are interconnected and there are increased possibilities of eating and getting eaten by different organisms of various species.