To match the provided headings (a-f) with the paragraphs (1-3), we can make educated guesses based on the content:

### Headings
a. sports
b. other activities
c. food and drink
d. exploring nature
e. Climate
f. some number

### Paragraphs
1. The population of New Zealand is 4.2 million people... (This paragraph focuses on demographics, which relates to numbers.)
**Match: f. some number**

2. The warmest months are January and February... (This paragraph discusses weather conditions.)
**Match: e. Climate**

3. There are many ways to discover New Zealand's natural beauty... (This paragraph talks about exploring nature and activities.)
**Match: d. exploring nature**

### Summary of Matches
1 - f
2 - e
3 - d

The extra heading that does not match is:
a. sports
b. other activities
c. food and drink