Home BIOLOGY TOPIC 3: BALANCE OF NATURE | BIOLOGY FORM 2

TOPIC 3: BALANCE OF NATURE | BIOLOGY FORM 2

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BALANCE OF NATURE NUTRITION TOPIC 1: CLASSIFICATION OF LIVING THINGS BIOLOGY FORM TWO FULL NOTES

TOPIC 3: BALANCE OF NATURE | BIOLOGY FORM 2

The Natural Environment

The Concept of Natural Environment
Explain the concept of natural environment

Natural environment is made up of all living and non living things that occur naturally on earth.

An organism living anywhere in any environment is affected by the things around it such as air, water, animals, plants, microorganism, stones, rock, soil, clouds and the sun.

Everything around it in fact makes its natural environment. It is important to understand that the environment includes all living things as well as non living things.

IMPORTANT TERMS

Ecology: is the branch of biology that deals with studying interaction oforganisms with their environment

Population: is the total number of organisms of the same species living in a certain area. Example the number of frogs in a pond

Community: this refers to the sum of total of all population of different organisms living in a specific called habitat

Habitat:
is the specific area where an organism is found and adopted. i.e it is
an appropriate for the certain community example an ocean, grassland,
and a pond

Ecosystem: refers to a natural unit made up of living and non living things whose interaction

Biotic and Abiotic Components of the Environment

Describe biotic and abiotic components of the environment

There are two components of environment,;

  1. Biotic (living things)
  2. Abiotic (non living things)

BIOTIC COMPONENT

These
are living components in the environment such as animals, plants,
fungi, andmicroorganisms. These organisms interact together in number of
ways and these waysof interaction include the following;

Competition
That organisms must compete for limited resources in struggle for life.
For anorganism to survive in an ecosystem it must compete with partner
for thelimited resources.

Predation Is the system in which one
organism utilize the other as food. The eater is a predator while the
eaten is a prey and a number of predators and preysregulate each other

Symbiotic
relationship This is where there is a close relationship or association
between organism sthis association could take various forms like
mutualism, commensalism, and parasitism

Adaptation Adaptation
has enabled organisms to survive. They may be anatomically structurally
physiologically or behavioral. Eg some organisms are poisoners totheir
predator while others while others develop warming colouration

See also  BIOLOGY NOTES FOR ORDINARY LEVEL (FORM 1 - 4)

ABIOTIC COMPONENTS

These
include non living organisms that are found in ecosystem. Example air
solar,energy, soil, and nutrients. Generally abiotic components of an
ecosystem consist ofphysical environment and they are as follows.

Climatic
factor Several change of climatic condition influence or determine the
survival of organisms in ecosystem such condition include temperature,
humidity,pressure etc

Aquatic condition Changes in the aquatic
environment and the nature of environment it is self determined by the
type of organism found in the area such a changes include water current,
wave action, salinity, etc

Light condition factor These affect much plant population where photosynthetic process depend onthe availability of light.

Soil factor/conditionThese are also adaphic factors and they include soil texture, soil structure and soil PH

Various Organism in their Natural Environment in the Community

Identify various organism in their natural environment in the community

Activity 1
Identify various organism in their natural environment in the community
The Importance of the Natural Environment
Explain the importance of the natural environment

IMPORTANCE OF NATURAL ENVIRONMENT

  1. It is a source of food to organisms
  2. It provides shelter and security for organisms
  3. It allow living and non living things to interact
  4. It provides an appropriate setting for organisms to reproduce andincrease in number.

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