Gastric secretion begins during the cephalic stage and ends during the intestinal phase. The regulation of stomach secretion is divided into three phases which are cephalic, gastric and intestinal. The cephalic stage occurs when the food is been eaten. Gastric secretions are stimulated by three chemicals which are acetylcholine, histamine and gastrin. The gastric phase occurs in the stomach while the intestinal phase occurs in the small intestines.<span />
Question:
In order for a fish to see a bug just above the surface of the water, light travels from the insect through the air and crosses into the water until it reaches the fishes' eye. Which statement is true regarding the light wave as it travels through the different media?
Answer:
D. The light wave will bounce back into the air when it moves into the water because it gets refracted from the bug to the fish's eye.
Just A Few Notes From The Internet:
The light waves will travel straight from the bug to the fishes' eye because that is the most direct path. The light waves will travel straight from the bug to the fishes' eye because there is no change in medium. The light waves will bounce off the surface of the water and the fish will see it.
Answered by: ItsAudrey
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Answer & Explanation:
A natural spring can be described as groundwater flowing naturally to the surface where it is lower than the water table. Water is present in the ground, which is under our feet in soil spaces and in the fractures of rock formations. There comes a point where the ground water is recharged and flows to the surface naturally. The water that naturally flows to the surface is called springs.
Stem cells differ from other kinds of cells in the body. All stem cells—regardless of their source—have three general properties: they are capable of dividing and renewing themselves for long periods; they are unspecialized; and they can give rise to specialized cell types.
