Bs 6.5. Mens en Milieu

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 3

Bs. 5 Humans and the environment

Today

Review

Learning objectives

Bs. 5 People and Environment

Conclusion

What is biodiversity?

Name a reason why biodiversity is declining

Learning objectives

• You can describe some causes and consequences of exhaustion and pollution
• You can describe some causes and consequences of climate change

Environmental problems

Exhaustion = 

Removing substances from the environment

Pollution = 

Adding substances to the environment

Exhaustion

Raw materials

- Oil, fossil fuels, sand and metal ores.

Monoculture

- Growing the same plants every year

- Soil exhausted = not enough minerals for new plants.

Pollution

Fertilize land (add minerals to the soil)

- Nitrogen is an important mineral for fertilization.

Nitrogen ends up in groundwater and air -> Air pollution

Pollution

Soil pollution

- Chemical industry waste ends up in the ground.

Water pollution

- Chemical pesticides against insects end up in the water.

The greenhouse effect

Greenhouse effect:

The blocking of heat radiation by greenhouse gases.

Enhanced greenhouse effect:

Burning fossil fuels -> Increased carbon dioxide in the atmosphere. More heat remains on earth.

Natural/enhanced greenhouse effect

(versterkt) broeikaseffect

Broeikasgevaar

Climate change

The average weather type over a long period has changed

Sea level rise is a consequence of climate change.

Drought

- deserts are getting bigger

Consequences of climate change

Salinification: reduction in the amount of fresh water and rising sea levels lead to salinification of rivers and therefore agricultural land.

Monoculture: Is it a Cause or a Consequence of Exhaustion? Explain

Name a cause and a consequence of climate change

02:39

Leg uit hoe het komt dat de zeespiegel stijgt.

Aan de slag!

Read Bs. 5 Humans  and environment 

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