AP BIOLOGY

Detailed explanation-1: -Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

Detailed explanation-2: -The main direct cause of biodiversity loss is land use change (primarily for large-scale food production) which drives an estimated 30% of biodiversity decline globally. Second is overexploitation (overfishing, overhunting and overharvesting) for things like food, medicines and timber which drives around 20%.

Detailed explanation-3: -Human impacts on the biosphere Carbon dioxide and emissions of various pollutants adversely effect all kinds of life forms. One specific concern is the greenhouse gas emissions that are attributed to global warming. The change this has on the global climate is of direct concern to the biosphere.

Detailed explanation-4: -Impacts from human activity on land and in the water can influence ecosystems profoundly. Climate change, ocean acidification, permafrost melting, habitat loss, eutrophication, stormwater runoff, air pollution, contaminants, and invasive species are among many problems facing ecosystems.

Detailed explanation-5: -Burning fossil fuels, releasing chemicals into the atmosphere, reducing the amount of forest cover, and the rapid expansion of farming, development, and industrial activities are releasing carbon dioxide into the atmosphere and changing the balance of the climate system.