- Oxygen can be found in air
- An animal / bacterium requires oxygen for survival / to breathe
- So, an animal requires air for survival

- An animal requires air for survival
- Animals / living things require water for survival
- Hence, an animal requires water and air for suvival

- An animal / living thing requires nutrients for survival
- An animal needs to eat food for nutrients
- Therefore, an animal requires food for survival

- An animal requires water and air for suvival
- An animal requires food for survival
- So, an animal requires water and air and food for survival

Hence, an animal requires water and air and food for survival
[Question]What do all animals need in order to survive?
[Context]- Oxygen can be found in air 
- An animal / living thing requires nutrients for survival 
- Animals / living things require water for survival 
- An animal / bacterium requires oxygen for survival / to breathe 
- An animal needs to eat food for nutrients