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There really are no human activities that don't affect Antarctica.
Some two human activities that affect land resources include encroachment into forests and directing industrial wastes into rivers. Industrial effluents can lead to poisoning of the fish in the river.
Thinking
There are some human activities during the night. The human activities are sleeping, eating, drinking, washing dishes, and some other human activities.
Human activities like the construction of roads and blasting of roads in the quarries are some of the things that affects volcanoes.
Floods are cause of human activities. Some of the activities are growing population, deforestation and global warming.
Living
Various human activities pollute atmosphere. Vehicle exhaust, Industrial waste etc are some examples.
It depends which activities you are referring to. Some have no measurable impact, others can severely affect local and global systems.
There are positive and negative effects of human activities on soil ph. In some cases where land is tilled the pH has increased but most areas have lower soil pH due to human activities.
when all the smoke comes out from the factories it pollutes the air and creates something called acid rain which is rain but with some acid in the clues in the name.
basically its breathing