Natural selection, is based upon the principle of "Survival of The Fittest" ensures that those who are more well adapted, especially having a better immune system, will survive. and the weaker ones will die out. Human evolution made the human immune system even better as time went by, and the system was more well adapted to diseases it was more exposed to like the Europeans were more resilient to smallpox than the native americans
A frog whose skin looks like the environment in which it lives
Gravitational force is directly proportional to the masses of the object. So "D" is answer
Hello! A water molecule undergoing "hydrolysis" (a process used to break down macromolecules) produces water because of the extra OH and H formed from the bonds being broken. I hope I helped!
