- Water is in the solid state , called ice , for temperatures between 0 / -459 / -273 and 273 / 32 / 0 k / f / c
- A glacier is made of ice
- Hence, a glacier is made of water in a solid state

- Oceans contain liquid water
- Water is in the liquid state , called liquid water , for temperatures between 273 / 32 / 0 and 373 / 212 / 100 k / f / c
- Hence, oceans contain water in a liquid state

- A glacier is made of water in a solid state
- Oceans contain water in a liquid state
- Hence, a glacier is made of water in a solid state and an ocean contains water in a liquid state

- A glacier is made of water in a solid state and an ocean contains water in a liquid state
- A state of something is a form of something
- So, a glacier is made of water in a solid form and an ocean contains water in a liquid form

Therefore, a glacier is made of water in a solid form and an ocean contains water in a liquid form
Q: The temperature at which water freezes enables water to exist in which two forms on Earth?
Context:
- A state of something is a form of something 
- Water is in the solid state , called ice , for temperatures between 0 / -459 / -273 and 273 / 32 / 0 k / f / c 
- Oceans contain liquid water 
- A glacier is made of ice 
- Water is in the liquid state , called liquid water , for temperatures between 273 / 32 / 0 and 373 / 212 / 100 k / f / c