Final answer:
The author could use a cause-and-effect structure to explain how human activities negatively impact the planet, such as carbon emissions causing climate change and unsustainable fishing practices leading to declining fish populations.
Step-by-step explanation:
The author could convey the same information using a cause-and-effect structure by showing how certain human activities lead to specific negative effects on the planet. For example, the author could explain how the release of carbon dioxide into the air from burning fossil fuels leads to climate change and its negative impacts on the planet. The author could also describe how overfishing and unsustainable fishing practices lead to the decline of fish populations and disrupt the marine ecosystem.
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