Producers, Consumers, Decomposers
Arrows in a food web show the direction of this transfer.
What is energy flow?
A barnacle on a whale benefits while the whale is unaffected.
What is commensalism?
When food, water, or space are low, these limit population growth.
What are limiting factors?
This variable is what a scientist changes on purpose in an experiment.
What is the independent variable?
An organism that is multicellular, has cell walls, and makes its own food belongs to this kingdom.
What is Plantae?
This group makes energy available to the entire food web.
What are producers?
A parrot eats fruit and its droppings fertilize the soil.
What is mutualism?
When fewer acorns are produced, squirrel competition does this.
What is increase?
This variable stays the same throughout an experiment to ensure fairness.
What is a constant or controlled variable?
Organisms in this kingdom are multicellular, can move, and must eat other organisms for energy.
What is Animalia?
These organisms break down waste materials and return nutrients to producers.
What are decomposers?
A mosquito biting a human.
What is parasitism?
A rainforest plant struggling to grow due to lack of light is affected by this limiting factor.
What is space?
The part of an experiment that changes as a result of the manipulated variable.
What is the dependent variable?
These organisms absorb nutrients from dead or decaying material and do not make their own food.
What is Fungi?
A hawk that eats a snake that ate a mouse that ate seeds is a ___________ consumer.
What is a tertiary (third-level) consumer?
A hawk capturing a mouse.
What is predation?
If a disease kills many producers in an ecosystem, what will likely happen to the consumers?
What is their population will decrease because their food source is gone?
The other term for a "testing variable"
What is the independent variable?
Which two kingdoms contain only prokaryotic organisms?
What are Bacteria and Archaea?
When one organism eats another, about what percent of the energy moves to the next level?
What is about 10%?
Two bird species that eat the same type of seeds in the same area are engaged in what type of relationship?
What is competition?
In a desert, the amount of this resource is a major limiting factor for both plants and animals.
What is water?
The two classifications that make up a scientific name.
What are genus and species?
These organisms are single-celled, lack a nucleus, and live in or on nearly every environment on Earth.
What is Bacteria?