year 7 food chain

1. 1
a) Lion food web
1 produce 4 food chain
2 Now link all the cards to make a web. Put the producers at the bottom.
b) The table shows the main species found in one part of the Antarctic.
Plant or animal Eats
microscopic plants
krill microscopic plants
squid krill
ice-fish krill
adelie penguin krill + ice-fish
emperor penguin krill + squid
fish-eating birds ice-fish
leopard seal emperor penguin + adelie penguin + fish-eating birds

2. 1
1 Use the data to draw a food web.
2 Adelie penguins find it harder to survive where there is less sea ice.
As the Antarctic warms, their numbers are dropping. Predict how this may affect the other species in the food web.
3 The total mass of krill is huge – far more than the total mass of humans on the planet. But their numbers are dropping
fast. Predict what effect this will have on the rest of the food web.
a) Lion food web
1 produce 4 food chain
2 Now link all the cards to make a web. Put the producers at the bottom.
b) The table shows the main species found in one part of the Antarctic.

3. 1
1 Use the data to draw a food web.
2 Adelie penguins find it harder to survive where there is less sea ice.
As the Antarctic warms, their numbers are dropping. Predict how this may affect the other species in the food web.
3 The total mass of krill is huge – far more than the total mass of humans on the planet. But their numbers are dropping
fast. Predict what effect this will have on the rest of the food web.
Plant or animal Eats
microscopic plants
krill microscopic plants
squid krill
ice-fish krill
adelie penguin krill + ice-fish
emperor penguin krill + squid
fish-eating birds ice-fish
leopard seal emperor penguin + adelie penguin + fish-eating birds