There are three phases of gastric secretion. the cephalic phase occurs a. at the end of a large meal, and the juices secreted are powerful and remain in the gi tract for a long period of time b. when the meal is excessively high in acids and neutralization is required c. before food enters the stomach and is triggered by aroma, sight, or thought d. immediately after food enters the stomach, preparing the small intestine for the influx of a variety of nutrients

How do living things obtain phosphorus

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Which plate boundary causes plates to collide forming mountain ranges, volcanoes, and island arcs? give an example of this type of plate boundary. 2. at which plate boundary do rifts and mid-oceans ridges form? give an example of this type of plate boundary. 3. at which plate boundary do plates slide past each other while moving in opposite directions? give an example of this type of boundary.