Adaptation-KS4

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Slide 1

POPULATIONS

Slide 2

Population size

A population is the number of a species living in a particular area

Slide 3

What factors could change a population?

Competition

Predation

Migration

Disease

Natural disasters

War

For food, water and space

Predators will eat prey and reduce the population (including the number of offspring)

Members of the population may leave the area

A disease could kill some of the population

Drought, fire, floods, volcanic eruptions etc could alter the habitat and affect the population

Wars can result in the death of many members of a population

Slide 4

What else can affect the numbers and the distribution of a population?

How well are individuals adapted?

This will affect their survival in a habitat.

What else lives there? This may mean competition for food.

There may be predators.

Slide 5

Adaptation

Slide 6

What is adaptation?

Adaptation describes how a plant of animal is able to survive in various environments

Well adapted organisms can cope with the different aspects of their environment, for example, the temperature

Slide 7

It is always a struggle for plants and animals to survive

ANIMALS STRUGGLE :

For food

For water

For protection against weather

Against being eaten by predators

Against disease

Against accidents

PLANTS STRUGGLE:

For water

For light

For minerals in the soil

Against weather

Against disease

Against being eaten

Slide 8

How does adaptation help organisms?

Well adapted organisms are better at coping with extremes of weather

They are better at competing for food

They are better at escaping from predators

They are more likely to survive in their habitat and produce offspring

Slide 9

An arctic habitat

This sort of habitat can have extremely low temperatures

The ground is covered with white snow for most of the year

Slide 10

How are animals adapted to survive in the Arctic?