humanity is making a big impact in the environment because they are growing and they are taking more land, plus they are waisting the natural resources such as water, etc. This problem is majory present in Australia, New Zealand and neighbouring Pacific islands.
Ecosystems in Polynesia, Micronesia and Melanesia need some effectve conservation policies because the region is getting extinctions.
The impact of humans on wildlife is likely to increase in Australasia and the Pacific islands. By 2050, the population of Australia is expected to have risen by 35%, and New Zealand by 25%, while Papua New Guinea faces a 76% increase and New Caledonia 49%.

More than 2,500 plant species have colonised Australia and New Zealand. Many have been introduced by governments, horticulturists and hunters. The temperatures in Australia have increased in line with climate change predictions forcing some species towards Antarctica and others to higher, cooler ground.

Climate changes is responsible for 300,000 deaths a year and is affecting 300m people, according to the first comprehensive study of the human impact of global warming, Projects have increased and will be responsible for as many as 500,000 deaths a year by 2030, making it the greatest humanitarian challenge the world faces.
Economic losses due to climate change today amount to more than $125bn a year more than all the present world aid The report comes from former UN secretary general Kofi Annan's thinktank, the Global Humanitarian Forum. By 2030, the report says, climate change could cost $600bn a year.