Answer:
Evolution
Explanation:
Natural selection is the differential survival and reproduction of individuals due to differences in their phenotype. The organisms with the most favorable genetic traits are more likely to survive to pass on their traits to the next generation - survival of the fittest.
Natural selection drives evolution, which is the change in the inherited characteristics of a population over time. This can lead to the formation of new species.
The digestive system facilitates excretion of wastes by eliminating wastes from the digestive tract. During the digestion process, after the nutrients in the food has been absorbed by the small intestine, the waste products in the food will be moved into the large intestine where it will be processed for elimination in the form of feces. <span />
JJ Thompson discovered subatomic particles, focusing mainly on the electron
The deep organs
Hope this helps :)
It is body composition! Np Welcome :P