There are no rivers in antarctica because:

What major factors play a role in global warming? 1. human activity and normal climate conditions 2. natural factors and human activity 3. normal climate conditions and abnormal human activities 4. abnormal human activities and natural factors

The capital of australia was located a. on a south-facing harbor d. between its two largest cities g. near the great barrier reef j. close to asia

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d