How can you relate the effects of these phenomena from human activities?
The activities that illustrate human control of the environment are the construction of canals and small dams.
Human activities can alter the atmosphere because of greenhouse gasses and aerosols. The greenhouse gasses that are released due to human activities include methane, nitrous oxide, halocarbons, and carbon dioxide.
In terms of pollution, human population. In terms of natural phenomena, the Sun.
Deserts are a natural phenomena but human activity, such as over grazing and improper farming practices, can cause a desert to expand.
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.
There aren't any.
0. Ecosystems are disturbed by natural phenomena as those caused by human activities. You cannot have an ecosystem that is undisturbed by both.
Oceanologists, and marine biologist
Astronomers and astrologists.
Archaeologists study past human life through the detection and analysis of the physical effects of human activities.