- Soil contains nutrients for plants
- An animal / living thing requires nutrients for survival
- Therefore, a plant requires nutrients from soil for survival

- Absorbing something is a kind of method for obtaining something
- If a living thing requires something then that living thing must obtain that something
- Therefore, if a living thing requires something then that living thing can absorb that something

- A plant requires nutrients from soil for survival
- If a living thing requires something then that living thing can absorb that something
- Hence, a plant absorbs nutrients from soil for survival

- A plant absorbs nutrients from soil for survival
- Plant uptake is when plants absorb nutrients from soil into themselves through their roots
- Hence, roots are used for absorbing nutrients from soil

- Roots are used for absorbing nutrients from soil
- Roots grow into the dirt
- Therefore, roots grow into the dirt to absorb nutrients

Hence, roots grow into the dirt to absorb nutrients
[Question]Plants on hills keep dirt in place during a rain storm. Plant roots grow into the dirt and keep the dirt from moving. Why do roots grow into the dirt?
[Context]- Soil contains nutrients for plants 
- Plant uptake is when plants absorb nutrients from soil into themselves through their roots 
- Absorbing something is a kind of method for obtaining something 
- An animal / living thing requires nutrients for survival 
- Roots grow into the dirt 
- If a living thing requires something then that living thing must obtain that something