Roles & Organization
Give an example of an abiotic factor
Rocks, Water, Sunlight
A series of events in which one organism eats another is called
a food chain
In this stage of the water cycle, water turns from a liquid to a gas
What is the law of conservation of mass?
True or False: Organisms can use "free" nitrogen
False, they need fixed nitrogen
What does a a limiting factor do? Give an example.
It stops or slows growth in an ecosystem. Competition for shelter, Infection of disease
What indicates the the movement of energy?
Arrows
This energy sources drives evaporation
The Sun
How are plants involved in the carbon oxygen cycle?
The use it in photosynthesis, respiration and decomposition
Nitrogen becomes fixed when it does this
Combines with other elements
An organism that breaks down dead animals and rotting leaves is a
decomposer
What type of model is a more realistic way to show how energy is transferred in an ecosystem?
A food web
This force plays a role in bringing liquid water back to earth
Gravity
What element do plants take in?
CO2 or Carbon Dioxide
What are 2 ways that nitrogen fixation occurs?
Certain bacteria performs nitrogen fixation or it is fixed by lightning
An organism that creates their own food is
In a food pyramid which organism has the LEAST amount of energy
The apex animal
Water that is not absorbed into the ground does this
Run off
Plants release what into the atmosphere
Oxygen
Once nitrogen is fixed, it can be used for?
Producers use it for building proteins
An ecosystem is made up on these two types of factos
abiotic and biotic
In a food pyramid, who has the most energy to transfer
The first level (producers)
Transpiration
What other activities release carbon into the atmosphere?
Eating and decomposers breaking down remains
Is nitrogen created or destroyed?
No, it is recycled