The Bering Sea
These two countries border the Bering Sea.
What are the United States and Russia?
These animals are warm-blooded, have hair and make milk, and breathe air.
What are mammals?
These organisms produce their own food from sunlight and carbon dioxide, and give off oxygen.
What are producers?
Organisms gain this by either creating food or consuming other organisms.
What is energy?
An organism that eats mainly plants.
What is a herbivore?
This winter phenomenon on the Bering Sea's surface helps mix up the warm and cold water.
What is sea ice?
These types of animals have backbones.
What are vertebrates?
These organisms cannot make their own food and have to consume other organisms for energy.
What are consumers?
This is the name for each step on the energy pyramid.
What is a trophic level?
These tiny organisms cannot swim, but instead float along with the current.
What are plankton?
This is when cold water flows up to the surface and carries nutrients with it to support many living things.
What is upwelling?
These are plankton that hunt and eat other plankton species.
What are zooplankton?
These kinds of relationships are shown in a food chain.
What are feeding relationships?
When an organism is consumed, this percentage of energy is passed up to a higher level.
What is 10 percent?
The compounds in food that the body requires for proper growth, maintenance, and functioning.
What are nutrients?
The Bering Sea contains many species of crabs, salmon, and halibut that are important for this industry.
What is fishing?
These are plankton that produce food and energy from sunlight.
What are phytoplankton?
This is a single pathway showing how energy passes through one path in an ecosystem.
What is a food chain?
When an organism is consumed, this percentage of energy is wasted as heat.
What is 90 percent?
This is a species whose numbers are so small that the species is at risk of extinction.
What is an endangered species?
The shallow bottom of the Bering Sea allows this to reach the seafloor and adds grasses and algae to grow there.
What is sunlight?
These organisms break down dead and rotting organisms and return them to the soil.
What are decomposers?
This is a map showing how all the different food chains in an ecosystem connect to each other.
What is a food web?
This is the second lowest level on the energy pyramid.
What are primary producers?
The portion of the shoreline that lies between the high and low tide lines.
What is the intertidal zone?