Levels of Organization
Group of the same species living in the same area at the same time?
Population
Anything living in an ecosystem is called.
Biotic
One species benefits and the other is harmed (like a parasite and its host); name this relationship
parasitism
What is overfishing?
Fishing to much and causing fish species to decrease.
Animals that eat only plants are called this
herbivores
Different populations of plants and animals interacting in the same place.
Community
Rocks, temp, and sunlight are all examples of what factor
Abiotic
This symbiotic relationship benefits both species.
Mutualism
Is chemical pollution, negative or positive?
Negative
In a simple food chain: phytoplankton → zooplankton → small fish → tuna. Which are the primary consumers?
Zooplankton
This includes the community plus the nonliving surroundings.
Name two abiotic factors that most directly affect where a marine species can survive.
Sunlight
Oxygen
Temperature
Salinity
Nutrients
When one species benefits and the other is neither helped nor harmed (e.g., barnacles on a whale), this is called
Commensalism
How can we protect our surface water or water in general. Two ways
Use less water, no pollution
Which level of an energy pyramid has the most energy: producers or top predators?
Producers
List the levels of ecological organization from smallest to the largest.
Organism, population, community, ecosystem, and biosphere.
A shark eating a fish is an example of what kind of interaction for food?
predation
A small fish cleans parasites off a larger fish and gets food; the cleaner fish benefits and the larger fish is helped. This is an example of which relationship?
Mutualism
Is fertilizer good or bad for the ocean and the environment?
Bad
Which level of an energy pyramid has the most energy: producers or top predators?
Producers
What is a single living species.
Organism
When two organisms both need the same limited resource (like food or space), this interaction happens
Competition
A spider builds a web between two
plants.
Commensalism
What causes the nutrients to grow in water?
Fertilizer
Explain why food chains rarely have more than four or five trophic levels using energy pyramid ideas (one sentence).
Because only about 10% of energy passes to the next level, so there isn't enough energy to support many higher levels.