Select all the actions in which carbon storage occurs.

Here are the actions in which carbon storage occurs:

• A) Oak trees produce sugar.

  • Oak trees perform photosynthesis, taking carbon dioxide from the atmosphere and converting it into glucose (sugar) and other organic compounds. This process stores carbon in the tree's biomass.

• C) Squirrels eat acorns to build up fat.

  • When squirrels consume acorns, they assimilate the carbon from the acorns and convert it into fat, which is stored in their bodies. This is a form of carbon storage within the squirrel's biomass.

• D) Bacteria decompose dead oak trees.

  • During decomposition, bacteria break down the complex organic molecules of the dead tree. While some carbon is released as carbon dioxide through respiration, a portion of the carbon is incorporated into the bacterial biomass as they grow and reproduce. This incorporation into bacterial cells is a form of carbon storage.

The action in option B, "Foxes use energy to hunt," involves cellular respiration, which releases carbon dioxide into the atmosphere, rather than storing carbon.

The correct options are A), C), and D).