On the basis of the available evidence, Antarctica has generally been thought to have been covered by ice for at least the past 14 million years. █████████ ████████ ██████████████████████ ███████ ██ █ ████ ██████████ █████ ████ ██ ███████████ █████████ ████ ██████████ █████ ███ ███ █████ ████████ ███████ ███████████ █████ █████ ███████ █████ ████ ██████████ ███ █████████ ███ █████ ████ ███████████ ████ ███████ █████ ████ ██████ ██████ ████████ ███████ ██ ████████ ████████ ██ ████████████ █████████ █████ ████ ██████ ███ ███ ██████ ████ ███████ ███ ██████ ███ ██████████ ███ ██████████
New evidence shows that the Antarctic ice sheet melted around 3 million years ago. Why? Because ocean fossils dating back only three million years have been found under Antarctica’s current ice sheet. We also get an possible explanation for how this could have happened: climate activity or volcanoes may have melted the ice, leading to ocean conditions that would explain the fossils.
The author’s conclusion is that Antarctica’s ice sheet melted around three million years ago, refuting the general belief that it’s been covered by ice for at least 14 million years.
Which one of the following ██ ███ ████ ██████████ ██ ███ █████████
Antarctica is no ██████ █████████ ███████ ██ ████ ████ ███████ ██ ███ ███ ███ ████ ██ ███████ ██████
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The ice sheet ████████ ██████████ ███ ███ ████ ████████████ ███████ ██████████ ███ ████ ██ ███████ ██████
What caused Antarctica ██ ██ █████████ █████ ███ ███ ███ ███ ███████ ██ ███ ███ █████ ████ ███ ██████████ ███████ ███ ██████████
The ice sheet ████████ ██████████ ███ ██████ ██████ ██ █ ██████ ██ ████████ ████████ ██ ████████████ █████████ ██ ██ █ ██████ ██ ██████ ████████ ████████