Question

order the topics from broadest to narrowest. broader tree conservation efforts whitebark pine conservation efforts conifer conservation efforts narrower

Explanation:

Tree is a general plant - type. Conifer is a subset of trees. Whitebark pine is a specific type of conifer. So the order from broadest to narrowest is as above.

Answer:

1. tree conservation efforts
2. conifer conservation efforts
3. whitebark pine conservation efforts