Question

What was the climate like in Antarctica before humans arrived on the global scene?

Answer 1

Prior to human arrival, Antarctica's climate was considerably warmer, supporting a diverse range of plant and animal life as detailed in the text. The passage indicates a stark contrast between this historical, thriving ecosystem and the continent's current frigid state.

Answer 2

Gondwana existed approximately 500 million years ago, as stated in the passage. The text indicates that Gondwana persisted for 500 million years before its fragmentation into separate continents.

Answer 3

The correct answer is (A) complexity of geological processes. The passage illustrates Gondwana's fragmentation into numerous countries, indicating intricate geological mechanisms, specifically the long-term movement and division of landmasses.

Answer 4

The author points out that the primary distinction between past and present is the introduction of humans and the resulting climate cooling. The text juxtaposes the warmer climate and rich biodiversity of Gondwana with Antarctica's current state: frigid and largely barren.