Erosion and mixed composition. Wind,rain have a way of mixing and can create crystals
The north and south fought for their rights of owning slaves. The south was for slavery, and the north was very against it. Many people died, and the north won
All of the parts of the DNA combine to make rungs. Those rungs are attached together with other rings and the DNA is twisted in a dibble helix to get its shape.
Answer:
- Sinuses
Explanation:
SINUSES are hollow spaces in the bones of your head above and below your eyes that are connected to your nose by small openings. Sinuses help regulate the temperature and humidity of inhaled air.