A gene is a segment of DNA that carries the hereditary traits and hereditary caracteristics.
Answer:
When digesting food, acids in your stomach help break down the food particles to easily travel into your intestines!
Answer:
The hierarchy of selection. We most typically think of natural selection working at the level of the individual, favoring those better at leaving behind more individual descendants. However, with a little imagination, we can see how natural selection might work at other levels of biological organization as well.
Explanation:
