Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.
Answer:
To find the volume of a rectangular object, measure the length, width and height. Multiply the length times the width and multiply the result by the height. The result is the volume. Give the result in cubic units, such as cubic centimeters.
1.Reproduction
2.Heredity
3.Variation in fitness or organism
4.variation in individual characters among members of the population
Answer:
True
Explanation:
Survival of the fittest baby. The better the trait, the more likely a species is to survive.
