CLASS 7 PPT SCIENCE : FOREST OUR LIFE LINE CBSE

FOREST
It is a sizable area of land that is heavily vegetated with trees, bushes, and other plants.
Forests are home to a variety of materials.
A wide range of plants, animals, and microorganisms can be found in forests.
In a forest, the highest layer of vegetation is made up of trees, while the lowest layer is made up of shrubs and herbs.
Various layers of vegetation can provide food and cover for animals, birds, and insects.
All of the elements in the forest are interconnected.
Forests can regenerate and it constantly changes and grows. 
The soil, water, air, and living beings interact with one another in the forest.
Forests aid in preventing soil erosion.
Forest growth and regeneration are aided by soil.
Communities that live in forests depend on forests to survive.
The climate, the water cycle, and air quality are all impacted by forests.

COMPONENTS OF A FOREST
Components in a forest are mainly divided into two;

BIOTIC COMPONENT : Living organisms in a forest which include animals, birds, trees and microorganisms
TREES

Trees are an essential resource for everyone.
They provide habitat for various species, clean the air and produce oxygen. 
Trees provide many things, like oxygen, food, shelter and more, to all living creatures.
Trees have even been found to help make the places we live in less polluted by filtering the air. They consume carbon dioxide and clean the air, and give us oxygen to breathe in

CROWN OF A TREE

Branchy part of a tree above the stem is known as the crown of the tree.
Trees had crowns of different types and sizes.
branches of the tall trees look like a roof over the other plants in the forest this is called canopy

INTERDEPENDENCE OF COMPONENTS OF FOREST

AUTOTROPHS : Green plants which can prepare by food through photosynthesis

HETEROTRPHS : Animals which gets food directly or indirectly from plants.

SAPROTROPHS : Animals which feed on dead animals

DECOMPOSERS : The micro-organisms which convert the dead plants and animals to humus are known as decomposers.

Decomposers help in maintaining the supply of nutrients to the growing plants in the forest.

FOOD CHAIN

The interdependence between producers and consumers is examined using various linkages that resemble a chain or organism interdependence

FOOD WEB

It is a network of linked food chains that can be used to symbolize various biological relationships.

DEFORESTATION

The act of removing trees from their natural habitat is known as deforestation

EFFECT OF DEFORESTATION

Effects of deforestation include an increase in carbon dioxide levels, which raise the earth’s temperature. 

The loss of forests results in the loss of natural habitats for animals and birds.

Flooding will occur because the soil would not be able to hold the water.

Deforestation puts the environment and the lives of people in danger.

IMPORTANCE OF FOREST

Trees in the forests can be cut for timber

maintaining the quality of air

Forests serve as habitats for various organisms & homes

1. FOREST : OUR LIFE LINE

2. FOREST It is a sizable area of land that is heavily vegetated with trees, bushes, and other plants. Forests are home to a variety of materials. A wide range of plants, animals, and microorganisms can be found in forests. In a forest, the highest layer of vegetation is made up of trees, while the lowest layer is made up of shrubs and herbs. Various layers of vegetation can provide food and cover for animals, birds, and insects. All of the elements in the forest are interconnected .

3. Forests can regenerate and it constantly changes and grows.  The soil, water, air, and living beings interact with one another in the forest. Forests aid in preventing soil erosion. Forest growth and regeneration are aided by soil. Communities that live in forests depend on forests to survive. The climate, the water cycle, and air quality are all impacted by forests.

4. FOREST PRODUCTS

5. COMPONENTS OF A FOREST Components in a forest are mainly divided into two; BIOTIC COMPONENT : Living organisms in a forest which include animals, birds, trees and microorganisms ABIOTIC COMPONENT : Non living organisms in a forest called abiotic component which include soil, water, minerals, sunlight, air

6. TREES Trees are an essential resource for everyone. They  provide habitat for various species, clean the air and produce oxygen.  Trees provide many things, like oxygen, food, shelter and more, to all living creatures. Trees have even been found to help make the places we live in less polluted by filtering the air. They consume carbon dioxide and clean the air, and give us oxygen to breathe in

7. CROWN OF A TREE Branchy part of a tree above the stem is known as the crown of the tree. Trees had crowns of different types and sizes . branches of the tall trees look like a roof over the other plants in the forest this is called canopy

8. INTERDEPENDENCE OF COMPONENTS OF FOREST AUTOTROPHS : Green plants which can prepare by food through photosynthesis

9. HETEROTROPHS HETEROTRPHS : Animals which gets food directly or indirectly from plants.

10. SAPROTROPHS : Animals which feed on dead animals

11. DECOMPOSERS : The micro-organisms which convert the dead plants and animals to humus are known as decomposers . Decomposers help in maintaining the supply of nutrients to the growing plants in the forest.

12. FOOD CHAIN The interdependence between producers and consumers is examined using various linkages that resemble a chain or organism interdependence.

13. FOOD WEB It is a network of linked food chains that can be used to symbolize various biological relationships.

14. DEFORESTATION The act of removing trees from their natural habitat is known as deforestation

15. EFFECT OF DEFORESTATION Effects of deforestation include an increase in carbon dioxide levels, which raise the earth’s temperature.  The loss of forests results in the loss of natural habitats for animals and birds. Flooding will occur because the soil would not be able to hold the water. Deforestation puts the environment and the lives of people in danger.

16. IMPORTANCE OF FOREST Trees in the forests can be cut for timber. The vast plant and tree reserves found in forests contribute significantly to maintaining the quality of air. Forests serve as habitats for various organisms and provide shelter.

17. The roots of the trees that grow in forests firmly grip the soil particles and stop erosion. Forests prevent floods by maintaining the water cycle on earth. Noise pollution is decreased by the forest’s ability to absorb loud sounds and noise from its surroundings