Food Chains Flashcards
1
Q
What does the arrow show in a food chain
A
Shows the direction of energy transfer
2
Q
What is Biomass
A
The mass of living material at each trophic level (stage) of a food chain .
3
Q
How do you calculate biomass
A
Number of organisms x the dry mass of one organism
4
Q
Why is dry mass used in a pyramid of biomass
A
Because wet mass changes over time
