Question

1)what do tuna and seals eat?
2)which animal is very common in the antarctic ocean?
3)how long can killer whale be?
4)what would happen to the air supply of algae and bacteria disappeared?

Answer 1

1) They eat fish

2) The krill

3) Male: 6-8 metres Female: 5-7 metres

4)They collect the carbon dioxide present in the air and convert it into oxygen. Once processed, the microalgae will be transformed into biogas and then into biomethane to heat the city.