B1.5 Carbon cycle and Food chains Flashcards
What is a producer?
All green plants; make or produce their own food
What is a consumer?
Living organisms that need to eat other living organisms
What is the order of a food chain?
Producer, primary consumer, secondary consumer, tertiary consumer
What does the arrow in a food chain show?
Where the energy goes
What do pyramids of biomass show?
Show accurately the amount of material on each trophic level
What is measured in a pyramid of biomass?
Biomass - dry mass of a living material
How do animals gain biomass?
Through food
How is biomass lost?
> energy from respiration (transferred to surroundings)
energy for movement, growth, etc.
lost in urine
lost through faeces
What is the carbon cycle and what does it show?
> fixed amount of carbon on Earth
continually exchanged
plants consume carbon dioxide (down arrow)
plants and animal remains become fossils
when burned they release carbon dioxide
being used at faster rate than plants can consume
How is efficiency calculated (biomass)?
(biomass transferred/original amount of biomass) x 100
