Trophic Levels
These consumers eat producers
What are primary consumers?
Phytoplankton are these type of organisms
What are producers?
The "arrow" goes in this direction in a food web
What is the direction of energy flow?
pH of 8 is considered to be
What is basic or alkaline?
When an organism hunts another for food, the food is called this:
What is prey?
This organism was directly affected by the disappearance of the wolves in Yellowstone
What are Elk (deer)?
These consumers are at the "top" of the food pyramid
What is the APEX predator?
This is the term for an organism that must eat other organisms to survive
What are heterotrophs?
Producers in a food web get their energy through this process
What is photosynthesis?
A substance with a pH of 5 is this times more acidic than a substance with a pH of 7
What is 100x?
When two organisms benefit each other, they have this type of relationship:
What is mutualistic?
This is one reason that the bees are disappearing (Colony Collapse Disorder)
Answer varies
This is the name for the 3rd level consumer
What is tertiary?
A type of consumer that only eats other consumers is called this:
What is a carnivore?
These organisms feed on all levels of a food web
What are decomposers?
When something is an acid, it gives away or releases this particle.
What is a proton?
When one organism uses and (harms/kills) another organism by taking something from it, it is called:
What is a parasite?
DDT breaks down easily in the environment into this chemical compound
What is DDE?
This is the name for the 4th level consumer
What is the quartenary consumer?
All energy on Earth originally comes from this source.
What is the sun?
This is the term for the phenomenon when one organism (at the top of the food chain) changes, all others below it will change too.
What is a trophic cascade?
This pH is considered to be neutral
What is 7?
The Shark and Remora are an example of this type of relationship
What is commensalism?
The process of toxins moving up the food web to concentrate at the highest organisms is called:
What is biomagnification?
This level makes their own food
What are the producers? (autotrophs)
A coyote that eats mice is this kind of consumer
What is a secondary consumer?
This species is the most influential of an ecosystem. Without it, the system may fail.
What is the keystone species?
This is the substance that most seashells are made of
What is Calcium Carbonate?
This type of relationship is harmful to both species
What is competition?
Eagles (and other predatory birds) were affected by DDT indirectly because it did this to them:
It soften their egg shells- make them soft and weak. Reproduction was impossible.