ecosystems Flashcards
1
Q
what is a food chain
A
the flow of energy from producer to tertiary consumer
2
Q
what is a producer
A
a type of organism that produces their own food usually by photosynthesis
3
Q
what is a consumer
A
organisms that consume other organisms to obtain energy
4
Q
what is a decomposer
A
organisms that break down dead plants and animals
5
Q
what is a food web
A
a diagram showing lots of food chains and how they overlap
6
Q
what is the nutrient cycle
A
the transfer of nutrients through an ecosystem
7
Q
describe the nutrient cycle
A
-soils nutrients up taken by plants (biomass)
-biomass falls out as tissues die (litter)
-litter releases nutrients as it decomposes (soil)
