The question is incomplete as it does not have the options which are:
A. the movement of swallowed food into the trachea rather than into the esophagus
B. Too rapid emptying from the stomach into the small intestine
C. too rapid emptying of the small intestine into the large intestine
D. regurgitation of acidic stomach contents into the esophagus, commonly called "heartburn"
E. the control of defecation
Answer:
Option-D
Explanation:
The oesophagus is a tube-like structure made of smooth muscle which connects the throat of the humans to the stomach.
At the lower side of the oesophagus, a sphincter is formed by the circular shaped muscle which when constricted does not allow the backflow of the substances from the stomach to the oesophagus.
If the sphincter in the esophagus fails to close, then the acidic content present in the stomach along with the food will flow back to the oesophagus and since the esophagus wall is not prepared for the acidic nature therefore the acidic content will cause the irritation and inflammation in the esophagus, a condition called heartburn.
Thus, Option-D is correct.
Answer:
A, natural selection
Explanation:
Evolution could be correct also, but I don't think it is, since the question asks about individuals that have a higher chance of reproduction
Lithosphere
13 major plates
Asthenosphere
Explanation:
The surface or lithosphere of the earth is broken into about 7 major plates that floats on the liquid asthenosphere.
The analogy above describes the theory behind plate tectonics.
- The crust and the rigid part of the upper mantle forms the lithosphere.
- The lithosphere is broken down into series of pieces called plates.
- There about 13 plates on earth surface.
- The rigid plates moves on the weak asthenosphere below as a result of convection currents.
learn more:
Earth's layers brainly.com/question/13059175
#learnwithBrainly
Answer:
DNA is in the nucleus of nearly every cell in your body.
Explanation:
DNA is housed in the nucleus because it is the genetic material and needs to be protected.
Answer:
When the calcium level is high in the bloodstream, the thyroid gland releases calcitonin. Calcitonin slows down the activity of the osteoclasts found in bone. This decreases blood calcium levels. When calcium levels decrease, this stimulates the parathyroid gland to release parathyroid hormone.
