Show:
Energy
Food Webs
Populations
Endless Interactions
Potpourri
100
The ultimate source of energy for the biosphere
What is light energy
100
An ecologist would expect to find this type of organism to be the most numerous in an ecosystem.
What are producers?
100
This type of growth has unlimited resources.
What is exponential growth?
100
In this type of interaction, species live in direct, physical contact with one another.
What is symbiosis?
100
This algae growth occurs when there are excess nutrients in a pond.
What is eutrophication?
200
This is what eventually happens to most of the energy that enters a food web.
What is heat energy?
200
This is what an herbivore eats.
What are producers/plants?
200
The carrying capacity limits this.
What is population size?
200
In this type of interaction, one organism lives on or in another organism.
What is parasitism?
200
Plants that grow on the branches of other trees are called this.
What are epiphytes?
300
Each step in a food chain is called this.
What are trophic levels?
300
This is the direction that an arrow should point in a food web.
What is an arrow pointing in the direction of energy flow?
300
A graph of logistic growth is this shape.
What is an "S" shape?
300
This term refers to the role that an organism plays in the community.
What is a niche?
300
This term refers to the increasing concentration of chemicals (like DDT) as you move up the food chain.
What is biomagnification?
400
This is something true of C-C and C-H bonds.
Which type of chemical bonds are high energy?
400
When these organisms disappear, the entire food web is affected in significant ways.
What are keystone species?
400
This type of growth depletes resources.
What is exponential growth?
400
In this interaction, both organisms benefit.
What is mutualism?
400
We use this term when an ecosystem is limited by a single nutrient that is scarce or cycles very slowly.
What is a limiting nutrient?
500
BTB detects the presence of this gas.
What is carbon dioxide.
500
These organisms eat both meat and plants.
What are omnivores?
500
You can tell the carrying capacity by looking at this graph.
What is logistic growth?
500
In this type of symbiosis, one organism benefits and the other is neither helped nor harmed.
What is commensalism?
500
These organisms come from other areas and increase in number, causing harm to the environment as well as expense to humans.
What are invasive species?