Answer:
The two continents that are entirely in the Southern Hemisphere are Australia and Antarctica.
Australia is known for its unique wildlife, such as kangaroos and koalas, and its iconic natural wonders like the Great Barrier Reef.
Antarctica, on the other hand, is a frozen continent covered in ice and is a crucial hub for scientific research on climate change and the Earth's ecosystems.
Both continents play significant roles in global environmental and scientific research efforts due to their distinct and fragile ecosystems.
