Final answer:
Earth's environmental impact is seen in animal extinction, loss of wetlands, coral reef damage, and ice floe depletion, mainly due to human overpopulation, pollution, and global climate change.
Step-by-step explanation:
Animal extinction, loss of wetlands, damage to coral reefs, and depleting ice floes are all consequences of how Earth's environmental impact is manifesting. These environmental issues are primarily due to three main factors: global climate change, largely driven by the burning of fossil fuels; pollution, which adds harmful substances to the environment; and human overpopulation, which intensifies all other factors leading to a decline in biodiversity. Notably, two risks that may directly result from human activities such as the pet trade are habitat loss and overharvesting.
Moreover, human activities have led to unsustainable resource use, habitat destruction, and detrimental fishing and hunting practices. These actions are resulting in fewer natural habitats and reduced populations of fish and other wild animal species. The impact of climate change also contributes to these problems by causing melting ice, rising sea levels, and altered freshwater supplies, further threatening various species and their habitats.