Bad things the body doesn't want maybe...
If this a TRUE/FALSE question, then the answer is that this is FALSE. Obesity would increase the risk for both death and disability for a number of reasons. Obesity increases the risk for heart disease, diabetes, cancer, arthritis, and many other issues.
Answer: Tropical cyclones usually weaken when they hit land, because they are no longer being "fed" by the energy from the warm ocean waters. However, they often move far inland, dumping many inches of rain and causing lots of wind damage before they die out completely.
Answer: This shows that over time, some insects can become "pesticide-resistant" meaning that pesticides don't affect them anymore. And this only happens every few generations. Therefore, each generation is being naturally selected and accumulating variations that make them resist the chemicals. This shows that each cockroach's genes are changing to give them variation from the rest of the population.
I hope this helps!