Which statement describes a relationship that is an example of mutualism

D

Explanation:

Mutualistic relationships are relationships in which each party, the bees and flowers, benefits from the interaction in some way.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

not only is it colder, it also becomes darker, less salty, and more dense.