Abiotic/Biotic Factors
When animals breathe, they give off a gas called carbon dioxide. How does carbon dioxide cycle through an ecosystem?
Plants take in carbon dioxide for photosynthesis.
In a grassland ecosystem, mice and rabbits eat plants. Hawks eat mice and rabbits. What would happen if a disease kills many of the rabbits in the grassland?
The hawks will eat more mice.
What information does a food chain represent about an ecosystem?
The flow of energy from the sun, to producers, to a series of consumers.
How are mushrooms, bacteria, and worms best classified in a land based ecosystem?
How are estuaries different from ponds, lakes, and oceans?
They have both saltwater and freshwater.
What type of factor is temperature in the ecosystem?
Abiotic Factor
How are forests and grasslands the same?
They are both terrestrial (land-based) ecosystems.
What information does a food web represent about an ecosystem?
The flow of energy through an ecosystem.
How are plants and algae best classified in a water based ecosystem?
Producers
Some aquatic ecosystems are a mixture of freshwater and salty water. They are rich in nutrients and provide a good environment for the offspring of many fish and shellfish. Which ecosystem is described here?
Estuary
Biotic Factor
Bisons, prairie dogs, and grasshoppers live in an area of fertile soil and tall grass. What ecosystem do they live in?
Look at this picture (page 4):
Which organisms in this food chain are consumers?
grasshopper, frog, and raccoon
Which organism in the food chain is a decomposer?
Bacteria
How do ocean and pond ecosystems compare?
Oceans have more diverse organisms than ponds.
Name a biotic factor in a rainforest ecosystem that is a producer.
How do forests and grasslands compare?
A: They have temperatures that vary based on their locations on Earth.
B: They receive the same amount of rainfall each year.
C: They are dark because thy are shaded from sun light.
D: They have poor soil.
They have temperatures that vary based on their locations on the Earth
What is the purpose of a food web?
It is a visual representation that shows overlapping food chains and all the paths energy can take in an ecosystem.
Where do all producers get their energy?
The sun.
Eelgrass is a flowering underwater plant. It has wide green leave and its roots anchor the plant in the muddy or sandy soil. Eelgrass is a source of food for birds and turtles in an estuary.
What might happen to the bird and turtle populations in the estuary ecosystem if eelgrass is removed.
Both turtle and bird populations might decrease.
Name 3 biotic factors found in a grassland ecosystem.
Name 2 abiotic factors in a grassland.
Biotic: grass, mice, shrub
abiotic: temperature, water, air
Name all the terrestrial based ecosystems we learned about.
Grassland, Coniferous Forest, Deciduous Forest, Rain Forest
Give an example of a food chain in a lake ecosystem.
Answers will Vary. Check with the teacher.
Name 2 produces, 2 consumers, 2 decomposers
Check with teacher.
Name all the water based ecosystems we learned about.
Pond, Lake, Estuaries, Salt Marshes, Ocean