Natural selection is sometimes described as "survival of the fittest." Four friends were arguing about what the phrase "survival
of the fittest" means. This is what they said: Diya: "I think ‘fit' means bigger and stronger." Ayush: "I think ‘fit' means more likely to reproduce." Daniel: "I think ‘fit' means being able to run faster." Hari: "I think ‘fit' means more intelligent."
Ayush: "I think ‘fit' means more likely to reproduce
Explanation:
Survival of the fittest simply means when organisms living in an environment develop traits or characteristics that help them to fully adapt to the environmental conditions and are able to survive, reproduce and pass on traits to their next generations. It's an indication that the organisms posses some characteristics that can help them to survive and reproduce in unfavorable environmental conditions.
It is regulated by peristaltic movements. Then the pyloric sphincter will act as a valve at the junction between the stomach and duodenum, controlling the flow of chyme into the small intestine.
