WorksheetsOcean threats
Total questions: 10
Worksheet time: 5mins
Oceans produce:
25% of the oxygen on Earth
between 25% and 50% of the oxygen on Earth
between 50% and 75% of the oxygen on Earth
All the oxygen on Earth
Which of these human activities is not a threat to the oceans?
Oil and gas extraction
Carbon dioxide emissions
Overfishing
Tourism
Swimming
In the last 50 years, the world production of plastic has been multiplied by:
10
20
50
How many millions of tons of plastic are dropped into the oceans each year?
Between 2 and 4 million tons
Between 8 and 12 million tons
Plastic is dangerous for biodiversity and kills...
more than 1 million seabirds per year
200,000 seabirds per year
In new Zealand, we recycle:
28% of plastic in circulation
50% of plastic in circulation
A plastic bag has a lifespan of:
30 years
400 years
How many plastic bottles are consumed by each New Zealander every year?
28
98
168
258
Why should you wear clothes made out of natural fiber?
Because cotton and linen are prettier than fleeces
Because when washed, synthetic fabrics lose their plastic fibers which pollute the oceans
Fast food generates:
more food waste than plastic waste
more plastic waste than food waste
