Gap Fill - Life on Earth - Level 4


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   already      carefully      cattle      estimate      every      half      how      just      level      mammals      many      mostly      professor      role      shocked      species      study      termites      wild      wild  
Humans are 0.01% of all life on Earth, but have destroyed 83% of all mammals and of our plant life. A new found the weight of kind of life form on Earth. A researcher explained the research started. He said: "I was to find there wasn't a comprehensive... of all the different components of biomass." He hopes the study will help people understand the dominant that humans now play on Earth.

There are 7.6 billion people on Earth. We share the same of biomass as . We have also managed to destroy living . Humans have also changed the ratio of livestock to animals. Today, 70% of all birds on Earth are farmed ( chickens). Around 60% of all on Earth are livestock (mostly and pigs); only 4% are wild animals. The said people should look more at what they eat.

Try the Life on Earth - Level 5 gap fill.

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