When the sea floor spreads or collides it creates breakages which would be ocean ridges and deep sea trenches
Oils are generally liquids at room temperature and are obtained from plants.
Hope this helps you;)
A star's brightness is determined by the distance away from earth.
<span>Sexual reproduction has the potential to produce tremendous genetic variation in offspring.<span>This variation is due to independent assortment and crossing-over during meiosis, and random union of gametes during fertilization.
Good luck!!!</span></span>
