Human Impact
Humans impact on food chains and food webs in the environment in a number of ways. Global warming, deforestation and pollution are just some of these impacts.
Humans impact on food chains and food webs in the environment in a number of ways. Global warming, deforestation and pollution are just some of these impacts.
Conserving our ecosystems
Over time, people have come to realise that the actions of humans have damaged the environment. Today, many scientists are investigating how we can save our ecosystems and endangered species. Many different methods can be employed by the government and communities to help the environment.
In north Queensland, the native cane beetle was destroying sugar cane crops. In 1935, the cane toad was deliberately introduced from South America as a method of biological control. However, the cane toad did not reduce the population of cane beetles. Instead, it adjusted quickly to the tropical environment, eating almost anything and spreading disease. Birds and animals that tried to eat the cane toad were poisoned. The rapid increase in cane toad numbers led to the decline of native frogs and reptiles in Queensland. The cane toad reached the Northern Territory in 1974 and Western Australia in 2009.
Task 1
Investigate one way in which humans' have impacted on ecosystems. Explore how humans' have attempted to change this impact - describe how humans' have attempted to conserve the same ecosystem. Brainstorm ways in which humans' can reduce their impact on the ecosystem. Present your findings to the rest of the class.
Over time, people have come to realise that the actions of humans have damaged the environment. Today, many scientists are investigating how we can save our ecosystems and endangered species. Many different methods can be employed by the government and communities to help the environment.
In north Queensland, the native cane beetle was destroying sugar cane crops. In 1935, the cane toad was deliberately introduced from South America as a method of biological control. However, the cane toad did not reduce the population of cane beetles. Instead, it adjusted quickly to the tropical environment, eating almost anything and spreading disease. Birds and animals that tried to eat the cane toad were poisoned. The rapid increase in cane toad numbers led to the decline of native frogs and reptiles in Queensland. The cane toad reached the Northern Territory in 1974 and Western Australia in 2009.
Task 1
Investigate one way in which humans' have impacted on ecosystems. Explore how humans' have attempted to change this impact - describe how humans' have attempted to conserve the same ecosystem. Brainstorm ways in which humans' can reduce their impact on the ecosystem. Present your findings to the rest of the class.