Ecological Factors
Flow of Energy
Cycles
Zones
Vocabulary
100
The following are what kind of factors:
Salinity, rainfall, temperature
What is abiotic
100
Name the trophic levels in the following food chain: kelp, sea urchins, sea otters and which has the least amount of energy and least population
What is primary producer, primary consumer, secondary consumer
100
This part of the carbon cycle "fixes" the carbon
What is photosynthesis
100
What are the two main zones of the marine environment
What are the photic zone and the aphotic zone
100
The largest population size that can be supported by a specific area with its available resources
What is carrying capacity
200
This is an example of what:
What is Limiting resource
200
Name the 2 techniques used for measuring productivity in a marine ecosystem and which one is more accurate
What are the light and dark bottle technique traditional and the radioactive carbon technique, the radioactive carbon technique is more accurate
200
In the carbon cycle, do decomposers increase or decrease the amount of CO2 in the water
What is increase
200
This zone is a hotspot for Marine Birds as its a place where marine life is constantly exposed to the elements
What is the intertidal zone
200
A factor required for a population to grow but present in small quantities in an ecosystem
What is limiting resources
300
What are two factors that keep most populations from experiencing a population explosion?
What are:
abiotic or biotic factors
limiting resources, such as not enough light, food, or space
300
A scientist measures the phytoplankton concentrations in 2 ecosystems. One has a much higher concentration of phytoplankton than the other. Does this mean it has a higher productivity as well?
What is no, not necessarily, some phytoplankton are better producers.
300
What is the one important difference between the carbon cycle and the nitrogen cycle?
What is naturally occurring nitrogen gas isn't usable and must be fixed by bacteria or cyanobacteria before entering the cycle to be used.
300
A sea sponge that has phytoplankton living in it would most likely live in this zone
What is the bathyal zone
300
The rate of photosynthesis carried on in an ecosystem
What is productivity
400
Two species of colonial sea anemones are growing on the surface of a rock. As both populations grow, they begin to take over the rock, leaving no more space to grow. These two different species compete for the same space but the space is limited and can support only a certain number of individuals. This is an example of what kind of competition
What is interspecific competition
400
True or false, detritus is a completely nonliving material
What is false, it also contains living organisms among the nonliving
400
In the nitrogen cycle, what two methods turn the usable nitrates back into its gaseous form
What are by way of ammonia (this process is called denitrification) and by way of decomposers
400
A benthic organism never sees sunlight and lives on the continental shelf. In what region of the ocean does it live?
What is the outer shelf
400
The converting of inorganic carbon into useful organic carbon substances
What is carbon fixation
500
A species of lobster inhabits the crevices beneath a coral-reef ecosystem. There are few openings under the corals, and every nook is filled with a lobster. What kind of competition is this?
What is intraspecific competition
500
Identify organisms that secondary consumers at least some of the time (at least two): 
What are: mackerel, herring, dogfish, cod, tuna, seal
500
In the carbon cycle, this process gets rid of dissolved CO2 in the ecosystem
What is photosynthesis by the producer
500
The zone where an autotrophic bacteria that uses chemicals found on the sea floor to make food for itself
What is the abyssal zone
500
Organisms that live in the water column away from the ocean bottom
What is Pelagic