Answer the following statement(s) true (T) or false (F)

1. Proposals have been submitted to phase down HFCs, a CFC substitute, because they are greenhouse gases contributing to climate change.
2. The “greenhouse effect” is a natural phenomenon.
3. Climate change and global warming are exactly the same phenomenon.
4. Oceans and forests act as natural carbon sinks, which can absorb the anthropogenic releases of CO2.
5. Scientific evidence supports the assertion that human activity is adding to the accumulation of greenhouse gases and therefore contributing to global warming.

1. True
2. True
3. False
4. True
5. True