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Changing environments

Part of ScienceLiving things and their habitatsYear 4

How we can protect the environment

A bear in a river with a salmon in its mouth

Environments are the surroundings that we live in; the habitat that a plant or animal is adapted to survive and thrive in.

The environment provides everything that a living thing needs; food, oxygen and shelter.

Our environments are always changing, but what causes them to change and what impact does this have on the animals and plants that live there?

A bear in a river with a salmon in its mouth
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Watch: Changing environments

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How do enviroments change?

Natural changes

There are some changes which happen naturally and cannot be avoided.

A winter scene of a river on the left, and on the right a summer scene of the same river.
Image caption,
A winter scene of a river on the left, and on the right a summer scene of the same river.

Seasonal changes

In the UK we have four seasons; spring, summer, autumn and winter. Habitats can look very different depending on which season we are in.

In summer, woodlands can be green and full of life. In autumn the deciduous trees are losing their leaves and starting to look bare. By winter, the trees are empty of leaves and lots of the animals and insects are hibernating.

In spring, everything starts to grow again and woodlands become busy once more.

These seasonal changes happen every year. The animals and plants that live in these habitats are used to it and often able to change what they eat, or where they shelter, depending on the season.

A winter scene of a river on the left, and on the right a summer scene of the same river.
Image caption,
A winter scene of a river on the left, and on the right a summer scene of the same river.

Weather changes

We have a wide variety of weather in the UK, from hot and sunny, to wet and rainy, to strong winds, to cold and snowy – sometimes in the same day or week!

Animals and plants that live here are used to all of the different types of weather and are able to live and adapt to the changes.

Sometimes animals and plants find it difficult when there is extreme weather that they are not used to. Habitats can be damaged by rain, flooding, strong winds and extreme heat.

Human changes

There are some changes that are caused by humans. Some of these changes can be damaging to the environment and the plants and animals that live there.

Image gallerySkip image gallerySlide 1 of 5, A coal fired power station and a sack of coal, Burning fossil fuels To create energy to power our homes, factories, shops and other places we need to burn fossil fuels, such as coal, oil and gas. When fossil fuels are burned they produce lots of a gas called carbon dioxide which stops heat from escaping from around the Earth and out into space, which is causing the temperature to rise. <br><br>The more this happens, the worse it is, because when it is warmer it causes the ice in cold parts of our world to melt, and sea levels rise, which can cause the land to flood. The increase in greenhouse gases makes our weather more unpredictable, which is why we are having much hotter days, and much wetter days, than we have in the past. <br><br>This changes the habitats around us, and plants and animals are struggling to cope with this change.
An illustration of a tree chopped down
Image caption,
A fir tree chopped down

Did you know?

Nearly 10 million hectares of forest are lost every single year from human deforestation, an area which is almost the size of England!

An illustration of a tree chopped down
Image caption,
A fir tree chopped down
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Watch: Learning how to protect the environment

Learn how we can protect plants and nature.

Fascinating facts

An illustration of a wind turbine
Image caption,
A wind turbine
  • The UK has four seasons: spring, summer, autumn and winter.
  • Trees and plants can turn carbon dioxide into oxygen which we breathe.
  • Transport like cars, lorries, planes and trains can produce lots of pollution.
  • Renewable energy like wind power and solar power does less damage to the environment than non-renewable energy like burning fossil fuels
  • Preserving green spaces creates more habitat for animals.
An illustration of a wind turbine
Image caption,
A wind turbine
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Slideshow: Changing environments

Image gallerySkip image gallerySlide 1 of 6, Trees cut down, Deforestation Deforestation is the clearing, or cutting down, of forests. At the moment we are cutting down more trees than we plant. It takes some forests hundreds of years to grow and for animals and plants to adapt to living there.
An illustration of a rain cloud.
Image caption,
A rain cloud

Did you know?

Meteorology is the study of the weather.

In the UK, a government agency known as the Met Office keeps track of the weather and climate.

They have noticed that the temperature on Earth is growing warmer, with all of the 10 warmest years ever in the UK having happened in the last 20 years.

An illustration of a rain cloud.
Image caption,
A rain cloud
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How can we look after our environment?

There are lots of things that humans do to the environment that can be harmful and damaging, but there are also things that we can do to help protect the environment and start to reverse some of the changes that have been made.

This is called conservation. What other things can we do to make a difference?

Planting trees

By planting more trees we can replace those that are being cut down. We can create more habitats for animals and create sheltered places for a range of plants to grow.

Trees and plants are great at taking in carbon dioxide, which is one of the greenhouse gases, and turning it back into oxygen, This helps to reduce the effects of climate change and burning fossil fuels.

Protect and create green spaces

We can build more nature reserves, parks and garden ponds. By creating new green spaces and protecting those that already exist, we can make places for animals and plants to grow. This will create more clean spaces with less pollution.

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Watch: Protecting green spaces

Looking to the future to learn about our present day environment.

An illustration of a plastic bag floating in the ocean
Image caption,
A discarded plastic bag floating in the ocean

Did you know?

The UK produces about 26 million tonnes of waste each year and less than half of this is recycled.

That is a lot of rubbish that is going into landfill sites!

An illustration of a plastic bag floating in the ocean
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A discarded plastic bag floating in the ocean
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Important words

An illustration of a bag of coal.
Image caption,
A bag of coal, a fossil fuel

Climate change – Long term changes in the temperature and weather conditions of a particular area, becoming either regularly warmer or colder than it would normally be.

Conservation – Protecting the environment from harm or damage.

Deciduous trees – Deciduous trees are a type of tree that go through changes with the seasons. Most deciduous trees lose their leaves in the autumn and grow new leaves in the spring.

Deforestation – This means cutting down trees and clearing forest land.

Environment – The area or surroundings in which animals and plants live, and the habitat they adapt to survive in.

Fossil fuel – Fossil fuels are non-renewable substances like coal, oil and gas. When they are burned they produce carbon dioxide which stops heat from escaping the Earth.

Greenhouse gases – Gases in the Earth's atmosphere that can trap heat and warm the planet, such as methane and carbon dioxide.

Habitat – A habitat is the home of an animal or a plant.

Hibernate – When animals enter a period of inactivity during the harsh winter months.

Meteorology – Meteorology is the study of the weather and climate.

Overpopulation – Overpopulation happens when the population of the Earth, a country, city, town or village overtakes the amount of homes, food and resources available.

Pollution – Pollution is the waste or dirt that makes environments more harmful and more unhealthy to live in.

Recycling – To convert waste into something that we can use again.

An illustration of a bag of coal.
Image caption,
A bag of coal, a fossil fuel
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Activities

Activity 1 – Environmental changes quiz

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Activity 2 – Changing environments

Humans are changing the environment, sometimes for the better and sometimes for the worse.

Design a poster, explaining how your local environment is changing.

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