Definitions
Food Webs
More Food Webs
Humans and Ecosystems
Life Cycle and Classifying Organisms
100
All of one species in a specific ecosystem
What is a population?
100
In the image below, which two organisms could be harmed if the grasshopper population were to suddenly decline?
What are owls and birds?
100
This provides four important things for an organism of food, water, shelter, and space.
What is a habitat?
100
Planting trees and plants has this type of effect on an ecosystem.
What is a positive effect?
100
For a frog, this includes egg - tadpole - frog.
What is its life cycle?
200
Air, water, soil, plants and animals are all part of this.
What is an ecosystem?
200
The arrows in a food web show the flow of this.
What is energy?
200
You would find rattlesnakes, cactus, rocks, and iguanas in this type of ecosystem.
What is a desert?
200
A human activity with a negative impact on ecosystems.
What is polluting, or littering, or chopping trees, or overfishing? Any one of these answers is correct.
200
Egg, Larva, Pupa, Adult is the life cycle for this animal.
What is butterfly?
300
The role an organism plays within its community or ecosystem.
What is its niche?
300
The greatest amount of energy found in a community of organisms on a food web is located here.
What are producers?
300
A plant that uses energy from the sun to produce its own food (contains the greatest amount of stored energy in the food chain.)
What is a producer?
300
Humans protecting natural habitats has this type of effect on an ecosystem.
What is a positive effect?
300
Organisms may have a different type of this during various stages during its life cycle. For example, tadpoles live in water and breathe through gills but frogs live on land and breathe with lungs.
What is niche?
400
All of the living and non living organisms in an environment.
What is an ecoystem?
400
A mushroom is a type of this.
What is a decomposer?
400
All ecosystem get their energy first from here. Food chains start with this as well!
What is the sun?
400
Humans chopping down trees has this type of effect on an ecosystem.
What is negative?
400
A tool used to classify organisms based on physical characteristics by answering a series of questions. The answer to one question may direct you to another question.
What is a dichotomous key?
500
A set of overlapping food chains.
What is a food web?
500
In a food web, a tree or a bush would be an example of this type of organism.
What is a producer?
500
This is one way energy flows through rabbits on the food web below from start to finish.
What is carrots, rabbits, foxes or What is grasses, rabbits, foxes?