Which characteristic is found in the whale but not in its food source, the phytoplankton?

The characteristic that is found in whale but not in phytoplankton is : heterotrophic
Heterotroph refer to the organisms that cannot fix carbon and uses organic carbon as a source of energy

hope this helps

Heterotrophic

Explanation:

Heterotrophs are secondary and tertiary consumers. Carbon fixation is the process of converting inorganic carbon (CO2) into organic compounds such as carbohydrates, usually by photosynthesis. Organisms, which can use carbon fixation to manufacture their own nutrition, are called autotrophs.

So, Whales are predators so they are Heterotrophs while phytoplankton can make their own food so they are autotrophs.

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.