Food chains and food webs

Question 1

how does energy flow

Answer 1

energy flows in one direction

Question 2

what happens if a species has a change in population

Answer 2

all the other species would be affected

Question 3

what do food chains show

Answer 3

Food chains show the energy transferred between organisms

Question 4

what happens to a food web if the ecosystem is more diverse

Answer 4

there will be more links in a food web

Question 5

what is bio-accumulation

Answer 5

the gradual build-up of a harmful toxin in a organism through a food chain

Question 6

what is a trophic level

Answer 6

shows how many steps an organism is from the start of a food chain

Question 7

Biomass

Answer 7

the amount of mass in a trophic level of a living or dead tissue

Question 8

how much biomass is transferred from each trophic level

Answer 8

10%

Question 9

What is a biotic factor

Answer 9

living factors that have an affect

Question 10

what is an abiotic factor

Answer 10

non-living things that have an effect