<span>Scientist think convection currents are what cause earths plates to move. a convetion current is caused by the diffrence in the temperature, Mantle material close to the earths core is very hot. Mantle material near the lithosphere is cooler.</span>
Glycerol is the main base in triglyceride.
In bundles in a ring is how a vascular tissue is arranged in dicot stems.
Your answer is A.
