Worksheet: Human Impact on Earth's Systems: Farming and Fishing
In this worksheet, we will practice identifying the impact that certain human activities, such as farming and fishing, can have in damaging Earth’s systems.
Did you know that around 24 billion metric tons of fertile soil is lost each year due to farming?
When farming activities are carried out, fertile topsoil is exposed and is often blown away by wind or washed away by rain.
Which word is used to describe this wearing away of the soil by wind and water?
Forests store enormous quantities of carbon dioxide. When forests are destroyed to clear land for farming, a large amount of carbon dioxide is left untreated in the atmosphere.
What effect does deforestation have on climate change?
- ADeforestation decreases the rate of global warming.
- BDeforestation has no impact on global warming.
- CDeforestation increases the rate of global warming.
Orangutans (orang-utans) are our closest living relatives; their name means “man of the forest.”
Deforestation has caused orangutans to become an endangered species. What does this mean?
- AOrangutans are dangerous animals.
- BThere are not many orangutans left in the wild.
Many species of fish, such as cod, are under threat of extinction due to overfishing.
What would happen to ringed seals if there were no cod left in the oceans?
- AThe ringed seal would have to find new types of fish to eat.
- BThe seal would eat the shrimp instead.
Scientists predict that by 2050, all seafood will run out.
What is the biggest threat to our seafood?
- AGlobal warming