What is a food chain and what is the first source of energy?
A model of the path that the energy in food takes as it moves from one organism to the next in an ecosystem; the sun.
What are organisms that eat plants called and how do they obtain their energy?
Herbivores; from the plants which have made and stored it.
Which organisms are the producers on land? How about in the ocean?
Plants & Phytoplankton.
Why are decomposers so important in an ecosystem?
They break down the remains of dead organisms into simpler substances which are then recycled in the ecosystem.
What advantage might an omnivore have if there were suddenly far fewer species in its environment?
They have a wide dietary base (they'll eat lots of different kinds of food, so they probably won't starve).
How might the death of one species population affect other species in a food web?
Wow, you really know your stuff! / Sorry, we were looking for...
What is an energy pyramid and what do its levels show?
A model that shows how energy flows through a food chain; transfer of energy + amount of biomass.
What might happen to the organisms in an ecosystem if food resources in the area decreased?
Increase in competition, reduction in population, disrupting of balance, etc.
Where do humans fit in a food chain?
Apex predator (top of the food chain).
What are the different kinds of consumers? What's the difference?
Primary, secondary, tertiary; the levels of the food chain from which they derive energy.
