Saltwater ecosystem covering 71% of earth's surface
Marine ecosystem
Organisms that eat only plants
Herbivores
Where all energy comes from
The sun
The energy source in this ecosystem
Sunlight
Ecosystem with water that is not salty, such as rivers, lakes, or streams
Freshwater ecosystem
Organisms that eat other animals
Carnivores
Organisms that make their own food using energy from the sun
Producers
The organism that breaks down nutrients and dead matter
Bacteria and fungi
Dry ecosystem with low rainfall and sparse plants
Desert ecosystem
Consumers
Organisms that break down and decay dead organisms and waste

A carnivore in this ecosystem
Shark, tuna, or mackerel
Ecosystem that contains an abundance of plants
Forest ecosystem
Organisms that eat both plants and animals
Omnivores
A series of plants and animals in which each organism is a source of food (energy) for the next in the series
Food chain

A producer in this ecosystem
One-celled life
Ecosystem that is dominated by grass and rich soil
Grassland ecosystem
Organisms that feed on the bodies of dead organisms
Scavengers
Living and nonliving parts along with their interactions

How does the grass support the hawk?
Because the organisms before the hawk had to eat the grass in order to grow and develop, giving the hawk a food source