14.1 Your impact on the earth

• Biologie
• Middelbare school
• havo
• Leerjaar 3

14.1 Your impact on the earth

14 A sustainable lifestyle

14.1 Je invloed op aarde

• Welkom!
  
• Leerdoelen
  
• Uitleg
  

   Levensbehoeften

   De aarde beïnvloeden

   Kringlopen

• Zelfstandig werken
• Afsluiten

Learning objective

• You will learn how your needs and behaviour influence your environment and how important cycles are.

One planet with 7,5 billion people

How fast is the world’s population growing every day?

1. around 25 000
2. around 125 000
3. around 225 000
4. around 525 000

View the photo. How can you tell that people are there?

View the photo. How can you tell that people are there?

How do people use the earth?

Primary needs = 

everything you need to survive

Secondary needs = 

everything that makes our lives easier

1. Water

2. Energy

3. Food

4. Materials

5. Waste

Ecological footprint = unit of measurement to compare how many hectares of land are used by people

voetafdruktest.wwf.nl

Food cycle

Carbon cycle

Cycles

Closed cycle = in a closed cycle all consumed substances are replenished

For example:

• make compost for your garden
  
• making new paper from old paper
  
• recycling glass

What?	Make: 14.1 assignments 4,6,7,8,9,12,14,15
How?	In your Nectar book (B). You may help your neighbour if you whisper.
Help?	Raise your hand. You may consult with your neighbour.
Time?	15 minutes
Finished?	Well done! Check your answers and make 16-18