organisations of ecosystems- population dynamics. Flashcards
1
Q
What do food chains show?
A
The feeding relationships within a community.
2
Q
what do food chains nearly always begin with?
A
a producer that makes its own food.
3
Q
what food do producers in a food chain normally make?
A
Usually a green plant or algae that can photosynthesise.
4
Q
what are producers are eaten by?
A
animals called primary consumers.
5
Q
what are primary consumers eaten by?
A
animals called secondary consumers.
6
Q
what are secondary consumers eaten by?
A
animals called tertiary consumers
7
Q
what’s at the top of the food chain?
A
An apex predator.
8
Q
What process can producers carry out?
A
they can make their own food.
9
Q
what do predator-prey graphs show?
A
the cyclical nature of predator and prey populations in stable communities
