Outline the impact of one human activity on the Arctic or Antarctic ecosystem.

Human impacts include: harvesting some Antarctic species to the verge of extinction for economic benefit. killing and disturbing other species. contaminating the soils.

Explanation:

Threats

Climate change. Climate change is the greatest long-term threat to the region. ...

Increased fishing pressure and illegal fishing.

Marine pollution. Persistent organic pollutants (POPs) have been measured around Antarctica and detected in wildlife. ...

Invasive species.

more human activities

Air pollution affects tundra environments in different ways. ... And toxic mercury, sent into the atmosphere by coal-burning and industrial activity, is accumulating in the Arctic tundra, threatening both humans and animals who live in the region. Air pollution can also harm or kill the important food source of lichen

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(4,-2)

explanation:

6x+4y=16

-6x-9y=-6

-5y=10

y=-2

x=4