Question

Match each natural cause of climate with the timescale over which it occurs
Solar output
Human activity
Changes in earth’s axis and orbit
Volcanic eruptions
Options
1-10 years
19-100 years
Thousand of years
Billions of years

Answer 1

Here’s the matching of each natural cause of climate with its corresponding timescale:

1. **Solar output** - **Billions of years**
2. **Human activity** - **1-10 years**
3. **Changes in earth’s axis and orbit** - **Thousands of years**
4. **Volcanic eruptions** - **1-10 years** (though their effects can last longer, their occurrence is typically measured in years, while the immediate impact can be significant)

For a clearer view:

- **Solar output**: Billions of years
- **Human activity**: 1-10 years
- **Changes in earth’s axis and orbit**: Thousands of years
- **Volcanic eruptions**: 1-10 years (noting the immediate impacts can last longer)

Please note that while volcanic eruptions have immediate impacts measured in a shorter timescale, their longer-term climate effects can persist for years to decades. The main response here refers to the timescale of the events themselves.