Lithosphere is the solid outer part of the earth which includes the brittle upper portion of the crust and the mantle. It is bounded by the asthenosphere below and the atmosphere above.
<em><u>The pressure in the lithosphere is about 109 gigapascals or GPa. </u></em>
<em><u>Asthenosphere has a pressure of about 18 GPa</u></em>
<em><u>The mantle is a layer between the outer core and the crust, it has a pressure of about 149 GPa.</u></em>
The orientation of a plant or other organism in response to light, either toward the source of light >positive phototropism<span> or away from it ></span>negative phototropism
