Answer:
water is what earth is mainly made of. our bodies are also mainly water.
Nitrogen fixation is a process in which nitrogen (N2) in the Earth's atmosphere is converted into ammonia (NH3). Atmospheric nitrogen or molecular dinitrogen (N2) is relatively inert: it does not easily react with other chemicals to form new compounds.
The stem
1.is responsible for the transport of food and water from the roots and leaves to the other parts of the plant
2. The stem holds the plant upright or erect
3. It also stores the nutrients
4. It also produces new living tissues
Hope this helps!!!