NEET BIOLOGY

Detailed explanation-1: -Human activities affect marine life and marine habitats through overfishing, habitat loss, the introduction of invasive species, ocean pollution, ocean acidification and ocean warming.

Detailed explanation-2: -Human development and activity leads to pollution (such as point source, non-point source, and noise pollution) and physical modifications (such as changes to beaches, shores and rivers). In addition, humans have removed most of the large vertebrates from the ocean.

Detailed explanation-3: -The ocean allows humans to trade, and gives many of us jobs in fisheries, trade, shipping, tourism and travel. The ocean also is a source of minerals, energy resources, and medicines. It provides us with the opportunity for ocean sports and activities.

Detailed explanation-4: -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-5: -Intensive use of our ocean and runoff from land-based pollution sources are just two of many factors that stress our fragile ecosystems-and increasingly lead to human health concerns. Waterborne infectious diseases, harmful algal bloom toxins, contaminated seafood, and chemical pollutants are other signals.