What is called when plant grow toward a source of water?

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america