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What is a species?
A group of individuals which have the ability to breed and produce fertile offspring.
Define a producer
Organisms which are able to produce their own food by using energy from the sun.
What term is given to an organism which only eats plants?
Herbivore
What term is given to an organism which only eats animals?
Carnivore
What term is given to an organism which eats both animals and plants?
Omnivore
What is a primary consumer?
An organism which consumes producers and tend to be herbivores.
What is a secondary consumer?
An organism which consumes primary consumers and can eat either animals or both animal and plant material.
Explain the 10% rule
The 10% rule is when only 10% of energy in an organism is passed onto the next trophic level. The other 90% is used or lost by the organism.
What type of pyramid is the only one which always gives a true pyramid shape?
Pyramid of energy
Describe the route nitrogen takes in the nitrogen cycle beginning with protein in plants.
Protein in plants > Protein in animals > Death and decay > Ammonium Compounds > Nitrites > Nitrates > Protein in Plants or Nitrogen in air > Nitrates.
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