When a desert lizard is on hot sand, nerves in its foot send a message to the brain. The brain analyzes this information and sends a message back through the nerves in the foot. This message tells the foot to move off the hot sand. Once the foot has moved off the hot sand, a message is relayed back to the brain. In this example, what is the first message sent to the brain? A. input
B. output
C. process
D. feedback

what school and grade?

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

c. heat from the poles back down towards the equator.